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Amplifier 2x30W with STK465 – Circuit Schematic
Amplifier 2x30W with STK465
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60W Linear amplifier – Circuit Schematic
60W Linear amplifier
The 60 Watt linear amplifier is simple all solid state circuit using power mosfet IRF840. The IRF series of power transistors are available in various voltage a...
active balanced ground – Circuit Schematic
active balanced ground
Designed the same thing but for the reason of having a higher output voltage swing for the mono part of the signal. I personally don`t believe/understand Meier`...
balanced ground – Circuit Schematic
balanced ground
Seems to me it uses at least as much power and at least as many components as a 4 channel balanced amp. it may well sound realy good and its quite clever, but d...
Blochead Diamond Buffer – Circuit Schematic
Blochead Diamond Buffer
The circuit is designed to run off a 100k volume pot, and be either a line stage or a headphone amplifier. It is a standard non-inverting gain stage (A=15dB) fo...
Making a BD139 voltage follower buffer – Circuit Schematic
Making a BD139 voltage follower buffer
Schematic shows R4 at the emmiter of the transistor, as amb and majkel have suggested it should be between the opamp and transistor, this is also the correct co...
MPF102 FET Preamplifier Circuits – Circuit Schematic
MPF102 FET Preamplifier Circuits
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MPF102 FET Preamplifier Arduino – Circuit Schematic
MPF102 FET Preamplifier Arduino
A Darlington would perform even better, but the circuit would be slightly more complicated. (See the schematic at bottom-right. ) Fortunately, the added complex...
MPF102 FET Preamplifier – Circuit Schematic
MPF102 FET Preamplifier
The circuit that I`ve described is a one-JFET design without much gain. You can significantly boost the gain by adding a source resistor bypass capacitor. The r...
FET Preamplifier – Circuit Schematic
FET Preamplifier
J201 JFET works best at 10 volts. The minimum current is 0. 5 mA. These are all ideal specifications. The specification spread of FETs is normally three to five...
FET Preamp with LND150 – Circuit Schematic
FET Preamp with LND150
Above, the saturation region starts at the knees on the left. We`re interested in curves for negative gate voltages (depletion mode). Note that this device also...
Complementary Power Amplifiers – Circuit Schematic
Complementary Power Amplifiers
The first schematic is for those who never buy parts anywhere but Radio Shack. You can walk in the store and walk out with all the electronics that you need. Fo...
Tube amp – Circuit Schematic
Tube amp
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vacuum tube – Circuit Schematic
vacuum tube
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Cymbal Vacuum Tube Push/Pull Power Amplifier 6H30 6W – Circuit Schematic
Cymbal Vacuum Tube Push/Pull Power Amplifier 6H30 6W
The Cymbal monoblock power amplifier is a unique and modern push-pull design using ultra-linear 6H30 triodes in a zero-feedback circuit. The uncommon circuit is...
6N7 Tube QRP Power Amplifier – Circuit Schematic
6N7 Tube QRP Power Amplifier
A Super-Duper Powerful Vacuum Tube QRP amplifier for my 800mW QRPP homebrew telegraph vacuum tube transceiver "3T" (I promise to write a separate article or two...
Guitar Amp – Circuit Schematic
Guitar Amp
This amp had hum and nosise. So I added cpacitors at power supply, but Voltage was high. There was spark at final tube socket pins. So I pulled off capacitors....
help me identify this amp – Circuit Schematic
help me identify this amp
Hi Sluts! long time lurker here, a while ago i bought 4 of those old amps for the case, and with my limited knowledge of old equipement, i never realy.....
16 Watt Amplifier – Circuit Schematic
16 Watt Amplifier
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2SC1946A 30 Watt VHF Amplifier – Circuit Schematic
2SC1946A 30 Watt VHF Amplifier
The 30 watt amplifier schematic shown below provides an appropriate power boost with an input of 4 watt up to 6 watts. The circuit is designed to cover 88-108MH...