Salas hotrodded blue DCB1 build

[Salas]

Originally Posted by RichLund

I remember the size of the bloody bouncers!

Sorry folks, Salas and I heading down memory lane is diverting the thread a bit.

Good work Salas. Keep it up fella

I remember the white older head bouncer guy and the two massive blacks. The leader would just say ''another night gentlemen'' if he was not to get us in. If we asked why, he would have replied ''drugs''. Then we were off to Archies. No further argument.

Cheers.

[Salas]

Originally Posted by wendell c

Thanks for the info Salas, will pull the trigger on that tx and pull the cutter out

You are welcome.

[Salas]

Originally Posted by RichLund

Oh, and thanks for this info. I was hoping to use a spare 30VA 18-0-18 traffo just to get me going. This helps a lot.

Cheers

Keep those CCS set resistors 10R 5W in your case.

[dvb-projekt]

Any recommendations for the CCS resistors if i want to add my Lightspeed/OVC pcb to the DCB1?
Could i stay with the 2x47R (1x22R) or should i lower the value a bit?

[Salas]

You want to make a low CCS running DCB1 plus tap off for powering an optivol if I understood correctly? What is the consumption of optivol?

[dvb-projekt]

Originally Posted by Salas

You want to make a low CCS running DCB1 plus tap off for powering an optivol if I understood correctly? What is the consumption of optivol?

That´s really funny... After 10 month of Lightspeed/Optical Volume Control pcb GB, i had finished my first own pcb in July.
Since than i don´t power it up. So i must measure the max. current it needs...

Perhaps you could tell me the current of the DCB1, so i could calculate the resistor value myself.

If i am not wrong both currents + 20% for the shunts, right?

[Salas]

Depending on LEDs Vf and Vgs of Mosfet it can be 70 to 90mA for 47 parallel 47.

[LucasAdamson]

Originally Posted by Salas

Yes, I have added a link about that flick too.

3.978k in total. Add one in series to the 3k3 that will get it about there, or make some other new combination from paralleled ones, whatever.

Oh yeah, so you did!

Salas, you are a shunt reg God! Thanks a million for all your help!

[dvb-projekt]

Originally Posted by Salas

Depending on LEDs Vf and Vgs of Mosfet it can be 70 to 90mA for 47 parallel 47.

I have measured the max. current of my OPC board... 61,5mA

[AndrewT]

Originally Posted by Salas

8.80-8.79-8.76-8.77

Yes,
and the output offset should be a tiny -ve value to confirm that you have them in the correct positions for both channels.
If the higher Idss is in the CCS position the output offset will be a tiny +ve value. If the output offset is a big +ve value, your B1 is in trouble.