Power Supply 12Volt to 9Volt DC Converter

Power Supply 12Volt to 9Volt DC Converter

Written by skema-elektronika.com on January 26, 2009 – 4:25 pm
Parts List:
R1 = 560 ohm
C1 = 1000uF/40V, Electrolytic
C2 = 10uF/25V, Electrolytic
C3 = 330nF, Ceramic
Z1 = 9.1V, 1watt zener
Q1 = ECG184, NTE184
Notes:
To get a more precise output voltage, replace zener diode Z1 with 10V and R1 with a 1Kilo ohm potentiometer. A Coolrib for Q1 is optional but highly recommended. You can replace Q1 for a more robust type to get more output amps depending on your requirements. Simple circuit to power your 9 volt cassette recorder and other stuff.

Macam-macam Rangkaian aplikasi Power Supply

Mirco Power Schematics

• MICRO POWER GATED CRYSTAL OSCILLATOR
• Reset generator uses "fleapower"
• V/F converter draws fleapower
• Micropower Resistor Programmable Output from 0.4V to 18V
• 3MHz Micropower Synchronous Boost Converters
• Micropower Dual and Quad JFET Op Amps
• Micropower 4- and 8-Channel, 12-Bit ADCs
• Micropower 600kHz Step-Up DC/DC Converter
• Micropower Buck/Boost Circuits
• Micropower Buck/Boost Circuits, Part 2
• Micropower MOSFET Drivers
• Micropower Monitoring Capability
• Micropower Rail-to-Rail Op Amps
• Nanopower Comparator with Reference
• Micropower Regulators for Battery Supply circuits
• New Comparators Feature Micropower Operation
• Button Battery Measurement Circuit
• 80V Linear Regulator is Micropower
• Micropower Voltage Reference
• Micropower Linear Voltage Regulators
• Using Microchip's Micropower LDOs
• Micropower DC/DC Converter circuits
• Micro power FLASHING LED
• 3 VOLT LOW BATT FLASHER
• Dual 25mV Micropower Op Amp
• Dual Micropower Comparator
• Low-battery indicator uses fleapower
• LT1500/LT1501 Low Noise Micropower
• MICROPOWER C-MOS OSCILLATOR
• MICRO POWER OVER-TEMPERATURE ALARM
• Micro Power AM Broadcast Transmitter
• Micropower ADC has eight differential channels
• Micro Power FM Circuits
• The MicroPower SE
• Motor controller uses micro power
• ULTRA LOWER POWER OSCILLATOR

High Voltage Schematics

• High Voltage, Low Current Power Supply
• Jacob's Ladders circuit
• HV Buck Converter
• High Accuracy High-Voltage Monitor
• 12KV output HV supply
• High Voltage from an Ignition Coil
• Ignition coil as a generator
• Negative Ion Detector Circuit
• High-voltage amplifier
• Tesla Coil Project
• High Voltage Power Supply
• 12 to 120 Volt Inverter
• Flyback Driver
• Mosfet stabilized power supply
• High Voltage Ring Generator
• high voltage swing from lower supplies
• Current-sense amplifier handles high voltages
• HV LASER Power Supply
• 0 - 300V Adjustable Power Supply
• 1-kV power supply
• High Voltage High Current Power Supply
• High-voltage amplifier drives piezo tubes
• High Voltage Power Supply
• Nikola Tesla coil project
• 100,000 volts Solid-State Tesla coil
• Tesla Coil/High Voltage Generator
• high-voltage interface
• Jacob's Ladder
• Ignition Coil HV Generator circuits
• HV capacitor project
• HV DC Generator
• Jacob's Ladder Generator
• High-voltage regulator
• Adjustable High Voltage PS
• StunGun circuit
• Xenon DC-DC Converters
• 12,000 Volt PS
• NITROGEN SPARK GENERATOR
• High Voltage Ring Generator
• High Voltage light bulb

Chargers Schematics

• 7,2 Volt Field Charger
• Automatic Charger with CD4541
• Car-Battery charger for Nokia 8210
• RC Charger
• Charger circuits
• FRIENDLY CHARGER FOR MOBILE PHONES
• LM3647 Reference Design
• Dual Smart Battery Charger
• CHARGER WITH ANALYSER
• MOBILE CELLPHONE CHARGER
• MOBILE PHONE BATTERY CHARGER
• Li-Ion Charge Termination IC
• Li-Ion Charge Termination Using the LT1505
• Li-Ion Linear Charger
• High Efficiency Lithium-Ion Battery Charger
• 4-Cell Ni-Cad Regulator/Charger
• ICs Simplify Battery Charging from the USB
• Circuit Charges Lithium-Ion Cells
• New Charger Maximizes Charging Speed
• Smart Battery Charger
• Portable Ni-Cd Battery Charger
• Standalone NiMH/NiCd Battery Charger
• Intelligent Battery Charger
• Charge Monitor for 12V Lead-acid Battery
• Battery Charger & DC/DC Converter
• LM3647 Reference Design
• Sealed Lead-Acid Charger
• Portable Solar Charger
• Charging Lithium-Ion/Lithium-Polymer Batteries
• Battery Charger Applications
• Buck-converter charger
• efficient battery charger
• Programmable Lead Acid Battery Charger
• Step-up supply charges battery
• Fast charging batteries with Zetex
• Lithium Ion battery charging
• Temperature Controlled NICD Charger
• Nicad Battery Charger
• NiCd Battery Fast Charger
• NiCads charger
• Battery Charger
• Chargers Use LM2576
• Battery Charging Systems
• Smart Battery Charging with COP8ACC
• HIGH-SPEED LITHIUM ION BATTERY CHARGER
• Lithium-lon Battery Charger
• Lead Acid Battery Charger
• Gelled Lead Acid Battery Charger
• 6V Gel cell charger
• 12 VOLT GEL CELL CHARGER
• 2 Cell Lithium Ion Charger
• Charge indicator gauges lead-acid batteries
• Charge Monitor for 12V lead acid battery
• Car Battery Charger
• Automatic Charger for Battery Hi-Fi Preamps
• Lead Acid Battery Charger PIC14C000
• Shunt Regulator for Solar Cells
• ZAP-Adaptor, rejuvenates DEAD NiCads
• ALKALINE CHARGER
• 12 Volt 20 Amp Solar Charger
• Smart Battery Charger with SMBus Interface
• Charge Li-ion batteries from ac
• Charger serves load while charging battery
• Charger delivers 2.5A with 96% efficiency
• Constant Current Battery Charger
• AUTOMATIC AA NICAD CHARGER
• Broken Charger-connection Alert
• Solar charger for lead-acid batteries
• Car Battery Charger
• SLA Charger
• 1A Shunt battery charger
• Switching current pump charger
• AA Battery Solar Charger
• Automatic 9V battery charger
• Battery charger
• Battery charger indicates rate of charge
• Bringing NiCd's from the dead
• Nicad Battery Charger
• Intelligent Battery Charger
• Solar NiCd charger
• Switcher IC hikes battery charger's efficiency
• Switching regulator charges NiMH batteries
• Microcontroller controls battery charger
• Battery Charger with PIC16C73A
• Li-ion battery charger
• Li-ion boost circuit uses no inductors
• Li-ion Battery Charger
• Emergency Light with Charger
• Ni-Cd Battery Automatic Charger
• Lead - Acid Monitor 12V
• Battery Equal Charge Indicator
• A Solar Cell Battery Charger
• Battery Charger
• Lead Acid Battery Charger
• Lead-acid charger
• high-frequency battery-charger
• Motorcycle battery charger
• charge power drives battery
• Programmable Lithium and Nickel Battery Charger
• Sealed Lead Acid Battery Charger
• USB Port-Powered Li-Ion/Li-Polymer Battery Charging
• Lithium-ion charger
• Power inverter bidirectional
• Pulse Charger for Lead Acid batteries
• 3.3V lithium-cell supply requires one inductor
• Battery Equal Charge Indicator

Current Limiting Schematics

• Dual Current-Limiting Switch for USB
• Add trimmable current limit to dc/dc supply
• 13 Volt 20 Amp with current limiter
• Current-Limited DC/DC Converter
• Current Regulators For LEDs
• Current Limiting Power Supply
• programmable Current-limit switch
• L200 Power Supply
• Circuit adds latch-off current limit to regulator
• Add-on Current Limiter
• Voltage reference sets current limit
• Circuit provides hiccup-current limiting
• Current-Limit Switch Is Digitally Programmable
• dc/dc converter's current-limit
• Comparator adds current limit
• Soft limiter for oscillator circuits
• Current limiter provides latch-up signal

AC-DC DC-DC Schematics

• 5V power supply
• Voltage Inverter II
• 6V to 12V Converter
• +30V power supply with +5V
• +30V DC-DC converter
• DC/AC inverter
• DC/AC inverter II
• 12 Vdc - 120 Vac Inverter
• 9 Volt 2 Amp Power Supply
• 5 Volts From a 9 Volt Battery
• High Current Voltage Regulator
• 12V to 6V Converter
• 14V Switching Power Supply
• Supply Voltage Indicator
• Transformerless PSU
• 4 Amps Universal PSU
• UPS Power Supply
• Variable Voltage Regulation
• 12 volt power supply (7812)
• 5 volt power supply (7805)
• 5/12 volt power supply
• simple voltage doubler
• voltage inverter
• 0.7 - 24V /2A Power Supply
• Positive and negative from a battery LT1010
• Shunt Regulator with ZR431
• HF DC-DC Conversion
• Dynamo Current and Voltage Regulator
• 0-30 Volt Laboratory Power Supply
• 0-15 Volt Tracking PS
• Transformerless Power Supply
• Power-Managed uC Power Supply
• power supply using LM317
• Supply Voltage Indicator
• Transformerless PSU
• 4 Amps Universal PSU
• UPS Power Supply
• Variable Voltage Regulation
• 12 volt power supply (7812)
• 5 volt power supply (7805)
• 5/12 volt power supply
• simple voltage doubler
• voltage inverter
• 0.7 - 24V /2A Power Supply
• Positive and negative from a battery LT1010
• HF DC-DC Conversion
• Shunt Regulator with ZR431
• Dynamo Current and Voltage Regulator
• 0-30 Volt Laboratory Power Supply
• 0-15 Volt Tracking PS
• Transformerless Power Supply
• Power-Managed uC Power Supply
• power supply using LM317
• 90w Power Supply
• Unregulated Power Supply
• Precision AC/DC Converters
• Precision full-wave signal rectifier needs no diodes
• The Output Adjustable Flyback Converter
• Transformerless Power Supply
• Power Supplies circuits
• Fixed Voltage Power Supply
• Dual Voltage Power Supply
• Bench Top Powersupply
• Voltage Converter
• Power Supply
• Classic Plus and Minus DC Power Supply
• CAPS PROVIDE VOLTAGE BOOST TO SERIES REGULATOR
• 240VAC TO 5VDC POWER SUPPLY
• High Current Power Supply
• -15 V 1-A Regulated Power Supply
• DC Supply
• PC 12V ADAPTER
• LM317 variable power supply
• Power Supply For Amplifiers
• +9V *and* -9V from one battery!
• Power supply +20V/15A and +12V/3A
• Power Supply 0-30V / 0-2A
• Power Supply for Amlifiers [B]
• Power Supply +50V 3A stabilized and regulated
• LM317 VARIABLE POWER SUPPLY
• Variable DC Power Supply
• Power Supply for P.A. Class40
• 5V/1A Power Supply
• 5V Supply Derives Power From 3-Wire RS-232 Port
• Variable DC Power Supply
• Variable Power Supply
• Dual Regulated Power Supply
• Autoformer Switch-Mode Power Supply
• Power Supply Adjustable 0V-30V DC/2A
• Bench Top Powersupply 3
• High Voltage High Current PS
• 18v AC to DC Power Supply
• 9 Volt 2 Amp Power Supply
• 13 Volt 20 Amp PSU
• The Output Adjustable Flyback Converter
• Alarm Power Supply
• Overvoltage Protection for the LM317
• Basic UPS Power Supply
• LM317 Regulator Circuit
• Variable Voltage Regulation
• Universal DC-DC Convertor
• Transformerless Power Supply
• Variable Power Supply
• Logic PSU with Overvoltage Protection
• Switchmode PSU Protection Circuit
• Simple Pre-Regulator
• Switchmode Power Supply For Car Audio
• Current Sensing Slave Power Switch
• High Current 13.8V Power Supply
• Soft-Start Circuit For Power Amps
• Signal Detecting Auto Power-On Unit
• Power Supply for Preamplifiers (Revision A)
• OBTAINING 250vDC & 6.3vAC FOR VALVES
• Simple DC Adapter Power Supply
• Stabilised power unit
• Low Voltage Supplies - Solid State - Tubes
• Power Supply for Preamplifiers
• L200 Power Supply
• Linear Regulated Dual Polarity Power Supply
• 13.8 V / 15 A from a PC Power Supply
• A Simple Capacitance Multiplier Power Supply For Class-A Amplifiers
• Increasing Regulator Current
• 48 VOLT PHANTOM POWER SUPPLY
• 12 Volt 30 Amp PSU
• Build A 10 Amp 13.8 Volt Power Supply
• +/-12V -> +/-5V Power unit
• Efficient flyback driver circuit
• Ignition coil driver
• Basic multiplier circuits
• Universal PSU
• Current Limiting Power Supply
• Current Limiting Power Supply
• Small Variable Power Supply
• 0-30 Volt Laboratory Power Supply
• +12V/-12V Power supply unit
• Variable Dual Lab Power Supply
• Voltage Doubler Circuit
• ADJUSTABLE VOLTAGE AND CURRENT REGULATOR
• High Current Regulated Supply
• Low Voltage, High Current Time Delay Circuit
• Interfacing 5 volt CMOS to 12 volt/ 25 Watt Loads
• Simple Adjustable Voltage Source
• Variable 3 - 24 Volt / 3 Amp Power Supply
• LM317T Voltage Regulator with Pass Transistor
• A voltage inverter circuit
• Voltage Inverter
• Low Power Negative Car Power Supply
• Voedingen - Power Supplies
• Build a Variable Voltage Supply for Cheap
• Adjustable Linear Regulators
• Variable Power Supply
• An Add-on Current Limiter
• Universal PSU
• Soft Start PSU
• Small Variable Power Supply
• Supply Voltage Indicator
• Current Limiting Power Supply
• 9 Volt 2 Amp Power Supply
• The Output Adjustable Flyback Converter
• Overvoltage Protection for the LM317
• Basic UPS Power Supply
• LM317 Regulator Circuit
• Variable Voltage Regulation
• Universal DC-DC Convertor
• Alarm Power Supply
• Logic PSU with Overvoltage Protection
• Increasing Regulator Current
• Self switching Power Supply
• 500W low cost 12V to 220V inverter
• 12 Volt DC to 120 Volt AC Inverter
• 0 - 300V Adjustable Power Supply
• Basic UPS Power Supply
• Regulated 12 Volt Supply
• Dual Regulated Power Supply
• LM317 variable power supply
• Dual Polarity Power Supply
• Fixed Voltage Power Supply
• High Current Power Supply
• 5V/1A Power Supply
• 10 Amp 13.8 Volt Power Supply
• 13.8V 20A power supply
• 3-30 V/2.5 A Stabilized power supply
• 12 Volt 30 Amp PSU
• Inverter
• 6V to 12V Converter
• Voltage Inverter
• Voltage InverterII
• Variable DC Power Supply
• Fast Electronic Fuse
• Variable Power Supply Using Fixed Regulator
• 1.3 Volt Power Source
• 12V 50W AC-DC Power Supply
• 0-30 V DC POWER SUPPLY WITH CURRENT CONTROL 0.002-3 A
• Simple 5V power supply for digital circuits
• LASER Power Supply
• 600 VOLTS POWER SUPPLY FOR QRO
• POWER SUPPLY 15V 4A
• Non-isolated Off-line AC to DC Power Supply
• MINIATURE ISOLATED AC/DC POWER SUPPLY
• LOW POWER 12,000 VOLT POWER SUPPLY
• Bench Top Power Supply
• Dual Polarity Power Supply
• Mini Drill power supply
• Flyback Driver Circuit
• LM317T Variable Voltage Regulator
• Simple regulated power supply with overcurrent trip
• Stabilized 9v power supply
• Adjustable power supply using LM317
• 8A Regulated PS for Mobile Equipments
• Solar Powered +5 and +3.3 Power Supply
• 0-30 VDC Stabilized power supply with current control 0.002-3 A

Power Control Schematics

• Active Power Zener
• Power down function
• G STRAIN ENERGY ABSORBER
• High and Low Voltage Cutout with Delay and Melody
• CHARGE COUPLED BI-DIRECTIONAL POWER MOSFET RELAY
• Automatic control starts loads softly
• Automatic power-off circuit saves battery
• Build a UPS for USB devices
• Circuit automates switch-over between battery and source
• CMOS gate implements reverse phase control
• Controller provides constant-power dc load
• Synchronizing controller detects baud rate
• Microcontroller watches, controls ac power
• Power source is insensitive to load changes
• Short dc power-line pulses afford remote control
• Smart switch cuts transformer turn-on current
• Voltage stabilizer
• Soft-Start Circuit For Power Amps
• Soft-start controller is gentle on loads
• Simple Electronic Circuit Breaker
• Electronic Fuse / Low Pass Filter

Tesla Coil Schematics

• Tesla Coil Project
• Tesla Coil/High Voltage Generator
• 100,000 volts Solid-State Tesla coil
• Nikola Tesla coil project
• Energy-sucking Radio Antennas

Switch Schematics

• simple switching power supply
• Switching regulator
• LH1605 Switching Regulator
• 12 Volt, 10 Amp Switching Power Supply
• adjustable switching-regulator LM2575T
• Reduce EMI in Switching PS
• Switch-Mode LED Backlight
• LT3439l low noise switching architecture
• Linear supply uses switch-mode regulation
• LM78S40 Switching Voltage Regulator
• Soft-Start Controller for Switching Power Supplies
• 555 timer as a switch-mode power supply
• Single IC, 5 Output Switching Power Supply
• Switching regulator forms constant-current source
• Self switching Power Supply
• Voltage Comparator Circuits
• Advanced Power Switcher
• +5V Switching regulator
• Ultra-Fast Rectifier for Switching PS
• Switching Regulator Boosts Input Voltage
• Controlling EMI from switching power supplies
• Switch Mode Battery Eliminator with PIC16C72A
• DC/DC generates negative supply
• Switching Regulator Evaluation Board
• Voltage Monolithic Switcher
• 20 Watt Simple Switcher
• Switch Mode Pre-Regulator
• Switch Mode Power Solutions
• 1-kV switching power supply
• Switchmode Power Supply
• Boost-Switching Regulator with MCP1650
• Switched Mode Power Supply for LCD Monitor
• Synchronous Switching Regulator Evaluation Board
• 2 Watt Switching Power Supply
• Step-up Switching Regulator Schematic
• Fairchild Power Switch
• Self-switching Power Supply

Solar Cell Schematics

• PowerSmart Solar Speeder, V2
• "Miller" solar engine
• 555-based solar engine
• 6 Amp Solar Power Center
• Solar Charge Controller
• Vx2SE solar engine
• Zener-based solar engine
• Solar-powered motor runs on 10 nA
• Solar Powered Reading Lamp
• Solar Engine
• dual slope-sampling solar engine
• FLED-based solar engines
• gate boost solar engine
• train detector using ambient light and a photocell
• Solar Cell Battery Charger
• Solar Engine Circuit
• 6 Amp Solar Power Center
• Solar garden light circuits
• Solar LED Mood Light
• Low-loss circuit powers solar lantern
• Photovoltaic By-Pass Diodes
• AA Battery Solar Charger
• VTSE solar engine
• SmartCap solar engine
• Solar Regulator
• 12 Volt 20 Amp Solar Charge Controller
• 12 Volt 20 Amp Solar Charge Controller
• 12 Volt Toilet Tank Refiller
• The D1 solar engine
• Photovoltaic switch disables unused LEDs
• Portable Solar Charger
• Remote Solar LED light
• Self Powered Solar Box Furnace
• LED Sensor Electronic Tracker with H-Bridge Drive
• Solar NiCad Charger
• Solar cells implement illuminator
• Solar Charged LED Utility Light
• Solar charger for lead-acid batteries
• Solar Panel Current Meter
• SOLAR REVOLVER
• Homemade Solar Tracker
• Solar tracking system
• Solarbotics' stepper motor drive circuit
• T3SE type 3 solar engine
• Tritium Solar engine

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