Power Supplies and Control Schematics

+/-12V -> +/-5V Power unit
+12V/-12V Power supply unit
+30V DC-DC converter
+30V power supply with +5V
+5V Switching regulator (1)
+9V *and* -9V from one battery
12 Vdc - 120 Vac Inverter Schematic
12 volt battery monitor
12 Volt DC Load Control and Battery Protection
12 volt power supply
12B Battery condition indicator
12V 30A power supply
12V battery capacity tester
13.5KV power supply
2 watt switching power supply
200 Watt Modified PC Power Supply 13.5 Volt 14 Amp
33 Volt DC To DC Converter
5 volt power supply
500W low cost 12V to 220V inverter
6V to 12V Converter
Adjustable power supply using LM317
Alkaline battery charger
Alternative power source for Magellan GPS receivers
Assorted power source and control circuits
Automatic AC voltage (110/240) selector
Basic UPS Power Supply
Battery Characterizer
Battery charge indicator
Battery charger
Battery Charger Ideas
Battery voltage monitor
Bench power supply
Bidirectionall power inverter
Charger for gel lead acid batteries
Constant Current Battery Charger
DC/AC inverter (1)
DC/AC inverter (2)
Dual Polarity Power Supply
Dual power supply
Dual regulated power supply
Easy power supply
Electric power controller
Filtering PC bus POWER
Fixed Voltage Power Supply
Flyback transformer driver
Fuse blown indicator
Fuse monitor / alarm
Generating -5VDC from +5VDC
Generating Negative 5 Volts from 9 Volt Battery
Ground Fault Interupter
Gyrator circuit
High Current Power Supply
High Current Regulated Power Supply
High current regulated power supply
High Voltage High Current Power Supply
HV supply: 12VDC in, 12KV out
Intelligent battery charger
Intelligent NiMH/NiCd switched mode fast charger
Kirlian device supply
Lead acid trickle charger
LED Battery Condition Indicator
LM317 adjustable power supply
LM317 Regulator Circuit
LM317 Regulator With Pass Transistor
LM317 Variable Voltage Regulator
LM3914 battery monitor
Low battery indicator
Low Power DC Quadrupler
Low Power DC to DC Converter
Low Power LED Voltmeter
Low Power LED Voltmeter
Low-dropout 12V regulator (LM324)
LTC1265 Nicad charger
Machine power loss beepter (PDF)
Multiple voltage power supply
Nagative voltage generation using 555 timer
NE555 Low Voltage Battery Disconnect Circuit
Negative voltage generator
Nicad battery charger
Nicad battery charger
Nicad battery cycler
Nicad Battery Discharger/Capacity Indicator
One 9V battery gives +18, +25, +33V
PIC16F873 DC motor speed controller
Power control for arc welders and other inductive loads
Power reminder beeper (PDF)
Power supply provides +5VDC regulated, +10VDC unregulated and 7.5VAC
Power Tool Torque Control
Pulse Charger for reviving tired Lead Acid batteries
PWM Motor Speed Controller / DC Light Dimmer
PWM Motor/Light Controller
PWM Motor/Light Controller
PWM Motor/Light Controller variants
Regulated 12V supply
Simple +5V power supply circuit
Simple Capacitance Multiplier Power Supply For Class-A Amplifiers
Simple DC Adapter Power Supply
Simple power supply
Simple switching power supply
Simple Variable Voltage Source
Single cell lithium battery charger
Smart battery charger
Snowmobile GPS power adapter
Surge protector
Switching Power Supply
Switching regulator (2)
Temperature Controlled NICD Charger
Tesla coil / HV generator
Transformerless Power Supply
TTL power supply with crowbar protection
Ultimate power supply
Unplugged power cord alarm
Unregulated power supply
Valve power supply
Variable 0-5A Current Source
Variable 3 - 24 Volt / 3 Amp Power Supply
Variable DC power supply
Variable Dual Lab Power Supply
Variable power supply
Variable power supply
Variable Regulated Power Supply
Variable Voltage and Current Power Supply
Various switching power supplies
Voltage converter
Voltage doubler
Voltage Inverter
Voltage Inverter
Voltage inverter

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