Power Supply Circuits (03)

Power Supply, Regulated, Switching, Transformer, DC to AC Inverter, DC Adapter, High Current, Dual Polarity, Battery Charger, Transformerless, Adjustable, Generating Negative Voltage, Variable Voltage, Tesla Coil, HV Generator, Voltage Inverter, Voltage Doubler, Step-Up, Step-Down, Flyback Transformer Circuit, UPS, Fuse, Indicator, Arc Welder, etc..

About Project Links

Note, if you are looking for AT or ATX PC power supply, you can find then in PC Related Projects 

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  Automatic AC voltage (110/240) selector
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  Variable 0-5A Current Source
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  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
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  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