« Electronic Circuits Homepage

Tube: Amp

Photo: High End Tube amplifier (180 Watt Stereo) High End Tube amplifier (180 Watt Stereo)
An extremely good stereo tube amplifier which produces 90Wrms per channel.
Variable DC Power Supply (1-30 Volts, 5 Amps). LM338K Regulator
0 Comments - in DC Power Supplies
A very simple variable power supply with a DC output voltage adjustable from 1-3- Volts, with a maximum DC current of 5 Amps. Uses LM338 DC voltage regulator IC.
Photo: 3 Amp Variable DC Power Supply 3 Amp Variable DC Power Supply
Provides 3 amps current at 3-30 Volts DC. Reduces ripple voltage to almost non-existant.
Photo: Xenon Tube Flasher (9 volt) Xenon Tube Flasher (9 volt)
A bright, variable flash rate strobe light. This is a 9 Volt battery powered xenon tube flasher. A small circut is easily transported for camping etc. Flash rate may be varied between 1 and 4 flashes per second.
LM317 1-25 Volts Variable DC 1.5 Amp Power Supply
3 Comments - in DC Power Supplies
An extremely simple and cheap DC power supply with variable voltage (1.2-25 Volts) control. The circuit uses an LM317 integrated voltage regulator Ic.
Photo: LM317 Variable Power Supply LM317 Variable Power Supply
A very basic power supply that can be adjusted over a range of about 1.5 to 35 volts DC. If you add a heat sink (included), you can run it as hot as 2 Amps output; otherwise about 60 mA @ 12 volts. This is a text book circuit using an LM317, which is a 3