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Audio Amplifiers: Tube Guitar Amplifier

Tube amplifier and guitar amplifiers.

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.
100 Watt Guitar Amplifier Circuit (MkII)
4 Comments - in Audio Amplifiers
PCB plans and circuit diagram (schematic) for what appears to be an extremely nice 100 watt guitar amplifier. Includes preamplifier and power amplifier circuit diagram and PCBs
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