Hi-End low pulsating AC-DC power supply, principal circuit

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Published: 08 March 2016
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fig1To start working with any electronic device you need a power supply. For our vacuum tube project we need DC output for 250-300V; our electrical grid is 220V AC 50 Hz (European standard). A lineal laboratory supply is an expensive device. It might be uncomfortable to invest about 1500$ at the beginning of your hobby project.

Let’s describe some basics principles and difficulties you may have with AC/DC supply.

 

Stereo amplifier prototyping

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Published: 26 October 2016
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logo15Two channels prototype is complete! Now it looks much better.

New photos presented bellow:

 

Vacuum tube amplifier on Soviet components

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Published: 30 March 2016
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amplogoMy vacuum tube amplifier provides the following characteristics:
1. Class A, output stage – pentode
2. Push-Pull schema
3. Lineal power supply
4. One channel (mono)
5. Tone control: LF, MF, HF
6. Bandwidth: 30 – 30 000 Hz
7. Output power: 5 Wt
I use Soviet VT: 6N2P and 6P14P. I propose my own design of the circuit.  
Interesting? Press “Read More” link below :-)