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The Fetzer Valve – Circuit Schematic
The Fetzer Valve
Tthe circuit has enjoyed popularity as a standalone booster and as a building block in larger circuits. While the circuit has its merits, we decided to further ...
Two-Stage JFET Preamp/Booster – Circuit Schematic
Two-Stage JFET Preamp/Booster
This circuit makes a nice, clean preamp or a clean booster pedal. It is not designed for overdrive, but is designed to be overdrivable. If overdriven, it provid...
Two-Stage JFET Preamp/Booster – Circuit Schematic
Two-Stage JFET Preamp/Booster
This circuit makes a nice, clean preamp or a clean booster pedal. It is not designed for overdrive, but is designed to be overdrivable. If overdriven, it provid...
Low Power Audio Amplifier – Circuit Schematic
Low Power Audio Amplifier
Another super-simple circuit. You could use this circuit to drive a low power speaker from a sound effects module or a noise generator. Or you could build your ...
Low Power Audio Amplifier – Circuit Schematic
Low Power Audio Amplifier
Another super-simple circuit. You could use this circuit to drive a low power speaker from a sound effects module or a noise generator. Or you could build your ...
GaAs FET preamp – Circuit Schematic
GaAs FET preamp
To build a GaAs FET preamp that has good gain and extremely low noise from readily available components. This preamp is stable with differing source and load si...
GaAs FET preamp – Circuit Schematic
GaAs FET preamp
To build a GaAs FET preamp that has good gain and extremely low noise from readily available components. This preamp is stable with differing source and load si...
3 - 5 Watt Class-A Audio Amplifier – Circuit Schematic
3 - 5 Watt Class-A Audio Amplifier
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60W Bass Amplifier – Circuit Schematic
60W Bass Amplifier
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60W Guitar Amplifier – Circuit Schematic
60W Guitar Amplifier
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10W Audio Amplifier with Bass-boost – Circuit Schematic
10W Audio Amplifier with Bass-boost
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Guitar Amplifier – Circuit Schematic
Guitar Amplifier
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25 Watt MosFet Audio Amplifier – Circuit Schematic
25 Watt MosFet Audio Amplifier
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7 Watt Class B Audio Amplifier – Circuit Schematic
7 Watt Class B Audio Amplifier
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70 Watt Guitar Amplifier – Circuit Schematic
70 Watt Guitar Amplifier
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Mini-MosFet Audio Amplifier – Circuit Schematic
Mini-MosFet Audio Amplifier
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60 Watt MosFet Audio Amplifier – Circuit Schematic
60 Watt MosFet Audio Amplifier
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5 preamp – Circuit Schematic
5 preamp
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magnet cartridge amplifier – Circuit Schematic
magnet cartridge amplifier
a magnetic pickup from an old record player can make a great pressure, and vibration sensor. replace the needle with a plate of thin metal (copper off a pcb is ...
N-Power Amplifier – Circuit Schematic
N-Power Amplifier
The amp has been designed to be an ideal upgrade for builders wishing to step up from Gainclones. This amp will kick out the power where Gainclones fall over, y...