When you are totally handicapped like me this will do too :Styroflex-Kondensatoren - Bauelemente / Bauteile - Sortimente - Passive Bauteile - Pollin Electronic
This are old style styroflex, mostly non magnetic. I measured some 6,8nF and they where from 6,6nF to 7,2nF so i can get a lot of pairs.
This are old style styroflex, mostly non magnetic. I measured some 6,8nF and they where from 6,6nF to 7,2nF so i can get a lot of pairs.
I do not know. Some parts are ordered that are missing but not here yet.
Frans, can i use 6.2V Zeners and D44H11, D45H11 in the PSU ?
Frans, can i use 6.2V Zeners and D44H11, D45H11 in the PSU ?
before engaging the servo...I would rough trim the offset by adjusting the current set in either the upper or the lower current mirror, not so much to avoid offset at output, but to ensure that the servo dosen't have to unbalance the currents in the gain-transistors too much
Yes, the zener is good (depends a bit on the input voltage). D44H11 and D45H11 is what I use.
Regards,
Frans.
updated schematics
Hi all, here the updated schematics. The big grey blobs are the test points...
Hi all, here the updated schematics. The big grey blobs are the test points...
Sorry If I did not get here earlier
Another 60 hours week at day Job
Here is the first take for the pre regulator.
I have used 15 mm foot print for the 100 nF
and there is space for 2 sizes of 2.2 Homs resistors.
Earth plane can be made better
and Pads for the 1uf and 100 nF Caps will need to be aded depending on component choice
+ links to Choke and 100 nF X1 caps
Buy Paper PME271E,PCB mount,100nF 300Vac 20.3mm Evox-Rifa PME271E610M online from RS for next day delivery.
WUERTH ELEKTRONIK|744841210|CHOKE, COMMON MODE, 0.1MH 1.5A | Farnell United Kingdom
Another 60 hours week at day Job
Here is the first take for the pre regulator.
I have used 15 mm foot print for the 100 nF
and there is space for 2 sizes of 2.2 Homs resistors.
Earth plane can be made better
and Pads for the 1uf and 100 nF Caps will need to be aded depending on component choice
+ links to Choke and 100 nF X1 caps
Buy Paper PME271E,PCB mount,100nF 300Vac 20.3mm Evox-Rifa PME271E610M online from RS for next day delivery.
WUERTH ELEKTRONIK|744841210|CHOKE, COMMON MODE, 0.1MH 1.5A | Farnell United Kingdom
That can be changed no problem at all
What size PCB would you suggest?
Is the board for Paradise 160 X 220?
I assume that keeping dimension (at least the one where board connect the same may be more aesthetically pleasing?
I tried to keep Caps/resistors close to Diodes. With a bit of space just in case things get warm
Are the paper Caps ok I assumed that X1 class may be needed?
I am very happy to make any changes
What size PCB would you suggest?
Is the board for Paradise 160 X 220?
I assume that keeping dimension (at least the one where board connect the same may be more aesthetically pleasing?
I tried to keep Caps/resistors close to Diodes. With a bit of space just in case things get warm
Are the paper Caps ok I assumed that X1 class may be needed?
I am very happy to make any changes
You are welcome!
If anyone needs bzx85c zeners they are easily available at this place:
S?AWMIR Electronics - Sklep elektroniczny. Dystrybutor cz??ci i podzespo?ów elektronicznych.
Unfortunately the shopping page is non English - I may buy quantity and send in envelopes if anyone has problems sourcing anything good at their location - but I guess most of big boys like farnell/buerklin/rscomp stock good parts anyway...
Wish I had the PCB boards too at my desk🙂 now.
Mighty good of you and my bit.
Just got a bit of Kerafoll 86/83 that can be cut in to strips.
Berquist stuf is ok but...
