Four Small 5-volts DC Regulator Circuits
This Small 5-volts DC Regulator. without IC-7805. Using transistors are interesting. If you have an old transistor or want to save. It may be a good choice.
6 Comments
September 7, 2012
12V & 5V power supply
This is 5v 12v dual power supply circuit using 2N3055 and Zener diode for 12V then to LM309 or IC-7805 dc regulator IC for 5V output which easy circuit [...]
November 19, 2008
35 watts OTL power amplifier with bass treble
Although it is ancient, it is still interesting.
July 16, 2007
Simple Variable power supply circuit using IC-741 and 2N3055
Though very ancient, it still is many useful.
May 22, 2007
Inverter circuit, 12V to 220V at 500W
This is inverter circuit, 12VDC to 220V 50Hz at 500W power.It easy to make and Low cost. using basic parts transistors 2N3055,IC-4047,
April 11, 2007
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