Simplistic NJFET RIAA

I'm not sure. The thing is that Q1 drain on both ch. was shorting to ground
once I start tightening it to the sink. Strange that was not the case with Q4-
it stayed insulated from the sink no matter how tight it was. I know that as
my audio gnd is separated from the safety gnd by 10R-2W II 100n NPO.
My meter showed 0ohm Q1 (tightend to sink) to chassis and ~10ohm Q4 to chassis.
 
Huge HS. Voltage will reach 28VDC and it will stay there, the photo was taken less then a minut after switching on.
 

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Fired up today. We have music in both channels :D Thank you Salas.

I only have one record at the moment. Even that's borrowed. So I'll be around the charity shops in the next few weeks and see if I can get something to compare with digital.

I will post some pics for you when I've tidied up.

There's some hum too that needs sorting.

Thanks again Salas.
 
I'm not sure. The thing is that Q1 drain on both ch. was shorting to ground
once I start tightening it to the sink. Strange that was not the case with Q4-
it stayed insulated from the sink no matter how tight it was. I know that as
my audio gnd is separated from the safety gnd by 10R-2W II 100n NPO.
My meter showed 0ohm Q1 (tightend to sink) to chassis and ~10ohm Q4 to chassis.


I have some graphite to240 pads. I purchased them (years ago) because of their astoningshly low thermal resistance.
Unfortunaly they are conductive. It was written on the specs.. :rolleyes:
 
I am so surprised how good my £12.50 Technics deck sounds. Salas, your circuit is working great. The music dept, at work is chucking out a pile of classical vinyl, which I have just inherited.

I still have a slight problem with hum. However, it seems that there are quite a few causes of it besides earth loops. I thought I would need to rehouse my RIAA circuit, but maybe not.