10.5 Watt Push-Pull audio tube power amplifier 6H9C - 6P13С


PUSH-PULL TUBE AMPLIFIER

Features:
The output stage: push-pull, class A, with a fixed offset in 6P13S tubes in triode switch.Output Power - 10.5 WBand Frequency - 25Hz ... 30kHzSensitivity - 0.707V (1V amplitude)THD - 1.5% (before clipping), 0.8 ... 0.9% (half power)The level of background noise on the output - 1.5 mV

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12 Volt Tube Distortion for guitar

TUBE DISTORTION
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IC1---LM747 dual op-amp, others may be substitued but pinout will differ
IC2---LM340K 12 Voltage Regulator
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30 Watt audio power amplifier for cars

Design by T. Giesberts

ELEKTOR ELECTRONICS MARCH 1995

30 W AMPLIFIER FOR CARS

The power that can be obtained from a standard car radio amplifier operating from a 12 V car battery is 5–6W, which (for many listeners) is not really enough for satisfactory hi-fi reproduction.
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Power Amplifier 1500W - 4OHMS


Power Amplifier 1500W - 4OHMS
This project is mainly in answer to those for whom no amount of power is enough. I have lost count of the number of times people have asked if it's alright to increase the supply voltage on every circuit published, and in general the answer is no - it's not alright. Every design on this site is optimised for the stated power. There is always some flexibility, but you must be very careful to make sure that transistor safe operating area (SOA) is not exceeded. There is also a maximum voltage for any semiconductor, and devices must be selected to ensure they are used within their ratings. MORE...

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One tube broadcaster

ONE TUBE BROADCASTER
The purpose of this broadcaster is to transmit your favorite music to every AM radio in your home. The transmitting power is so low that it should not bother the neighbors. A common application would be to drive it from the speaker leads of your FM radio, which could then include playing your XM or Sirius to your AM sets, or just your favorite FM station.

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 Manual


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