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OTL Asylum OTL, Output Transformerless Amplifier User Group. |
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In Reply to: RE: Time to tackle the High Voltage Power Supply posted by cpotl on January 1, 2016 at 17:53:51:
Hello cpotl
I'll get to your question after this first picture.
A few years ago I had a friend build 'risers' for my MA-1 amps.
In hindsight, 3" was not enough.
Good gosh are those 200uF Mundorf Tubecaps big!!!!
Let's get to cpotl
In this next picture, I have removed the orange drop cap and the 7.5 Ohm resistor. These two appear to make an RC circuit. A quick calculation puts the corner frequency at 212,314Hz. I will assume this RC filter filters out the Utility Companies ~200000Hz carrier signal. This signal is how different power stations 'talk' to each other.
I am not an electrical engineer.
The 'front' of the RC circuit is connected to the HV caps, and the 'back' of the circuit is also connected. This is through the 600 Ohm resistors.
I need help in understanding this.
The original HV power supply caps are directional?.
The new ones will not be. They are 'film'.
Question: Does current and voltage pass in both directions in the 'old' capacitors?
Do the 600 Ohm resistors connect the power, coming to the caps from the transformer, to the RC circuit, therefore 'cleaning' the power to the HV caps?
If yes, then any value around 600 Ohms will work.
Otherwise????
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Follow Ups
- Atma-Sphere MA-1 - Cousin Billy 01:13:59 01/02/16 (5)
- RE: Atma-Sphere MA-1 - Banat 04:44:21 01/04/16 (4)
- Picture of mod. Music is playing and no smoke - Cousin Billy 12:57:55 01/07/16 (3)
- Technical question which will likely not be answered - Cousin Billy 01:51:55 01/08/16 (2)
- Vh Audio CuTF have arrived - Cousin Billy 13:46:48 01/08/16 (1)
- RE: Vh Audio CuTF have arrived - Lew 08:51:32 01/15/16 (0)
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