Thanks, Salas.
Concerning the circuit on post #907, 8mA (Q4) on 200kohm (R4, R10) will drop 1,600V, so one of the two values is wrong.
No, 8ma its the free IDSS rating with a 9V battery test. The trimmer between g,s takes it down and gives us the Vout setting choice. It can even be a higher value trimmer. An 8mA IDSS 2SK170BL gives about 2mA with around 100R between g,s for instance at this circuit's VDS, under the BJT margin that is snugged in, and protected.
Here are all my practice “Simpler Simplistic'', please see,
Thanks a lot Salas!!!
Quanghao
And the Board finis !,But it is wrong! you can see please!
Attachments
Hi, Quanghao, forgive my ignorance, but what is this donut shaped thing on the board, at the heatsink opposite side?
That small choke should be in the Heater PS section of the pcb, not in the Salas' shunt.
Hi, Quanghao, forgive my ignorance, but what is this donut shaped thing on the board, at the heatsink opposite side?
Coil.
It isn't in the parts list, nor in the schematic..
Read what I wrote: not in the Salas's shunt circuit
Read what I wrote: not in the Salas's shunt circuit
This means that the real Simpler Simplistic starts at the positive leg of C1?
That small choke should be in the Heater PS section of the pcb, not in the Salas' shunt.
Hi! that is my filament
You can see in the image!
Attachments
Sorry, I still can not see a clear answer on this. Let me expose it in another way.
Suppose that one just want to use the regulator stuff, and want to have the raw DC supply completely off board, in case of using your board, is it to be filled starting at C1, while ignoring everything that comes first on the schematic of post 943...?
Suppose that one just want to use the regulator stuff, and want to have the raw DC supply completely off board, in case of using your board, is it to be filled starting at C1, while ignoring everything that comes first on the schematic of post 943...?
It has been sometime since the low voltage (+18.6V & -18.6V) regulators were posted.
Are there any updated/improved versions of this circuit?
This is the high voltage reg's thread. 200-350V etc.
- Home
- Amplifiers
- Power Supplies
- Simplistic MosFET HV Shunt Regs