Power supplies and control schematics

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