Using the HYPNOTIZE as a general shunt reg PCB

[merlin el mago]

For 24V I assume that don't need to populate the left side with regulator & relay of the PCB, right?

[Salas]

Goes without saying that you don't have to populate the minus side if you only need a plus voltage. The plus side is the one with IRFP9240s.

[merlin el mago]

A photo:



So with 1 PCB I can get +-24V?

[Salas]

This side you framed is the audio side. Of no interest in this thread. You leave it blank, or cut it out and chuck it in the bin.
Yes, can do +/-, its symmetric.

[Tea-Bag]

yes, a hacksaw and 'matching' electrical tape, that is the teabag way.

[merlin el mago]

Many thanks for answers, now I haven't doubt.

[Rax]

Howdy everybody,

I got a couple of questions I'd appreciate some input on.

1. Does anybody have info on a TO-247AC heatsink that would be under 2.7C/W? The largest (individual) TO-247 HS I could find is the Aavid Thermalloy 6400BG (which is the 2.7C/W I have in mind). This would allow, say, about 18W dissipation in my application (pretty warm environment)... This is for the single rail 'pseudo-hypnotize' I've been working on. The idea is to make the board as versatile as possible. 2.7C/W doesn't sound particularly versatile to me. Ah yes - if possible, easy to source in the US.

2. Has anybody else looked at the PCB? Salas was telling me he's a P2P kinda guy - are there some experienced PCB designers here that could give me some feedback? Salas - maybe at other threads, but sharing interest for the simplistic shunt regulator?...

Best,
Radu.

[merlin el mago]

Originally Posted by Salas

This is to take low excess heat for those who would have 15+15VAC Tx for the DCB1 instead of 12+12VAC when still set at about 60mA CCS.
You say you want to power a +/- 100mA application, that means to set at least about +/- 130mA with 33//33R 1W per side. If your application really draws +/-100mA all the time then 0.72W is the dissipation per shunt Mosfet, and about 1W per CCS Mosfet with the Tx you described. Those sinks look like taking it. If its less on the load in reality, no. Consider the option of mounting the Mosfets underneath and fixing them on chassis with insulation pads. That way there will be no problem if there is more heat than we think, and you could go 22R//22R 1W for a nice 200mA setting that lets it behave a bit better subjectively as some members have found in the DCB1's case.

How do you calculate the resistors value?

[Salas]

Roughly 2.2V/R gives the current as I say in post #1.

[merlin el mago]

Oooops, looking for RCA connector for RIAA I get these nice caps suitables for C5 Shunt reg. PSU



BG WK Power Tank 220uF/200V, wow, can be suitables?