|
|
|
#1
02-15-2023, 10:36 PM
|
|||
|
|||
|
Zenith Integrator - Replacement
Here is a little project I did for replacing Zenith integrators using an ExpressPCB designed circuit board, I was able to sneak these on to a larger project board. Assuming the data I found on-line is correct these should work nicely. Note I could not find values listed for part number 87-9 but elsewhere I saw 87-9 was replaced by 87-8.
  
|
|
#2
02-17-2023, 12:44 PM
|
||||
|
||||
|
Nicely done. What type of ceramic caps did you use? Some have better temperature stability that others. Probably not really an issue with a circuit like this though.
|
|
#3
02-17-2023, 02:04 PM
|
||||
|
||||
|
Personally I'd rather add a terminal strip or bend the wires together and solder. The PCB is more distractingly modern than the other 2 methods not to mention takes more time and money.
About the only place where PCBs make sense is K-networks that have more than 4 leads and are used in a TV that was built with a PCB like the predictas.
__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4
|
|
#4
02-18-2023, 09:18 AM
|
|||
|
|||
|
The capacitors I used are X7R at 1kv. Not the worst temp code but still poor. I would be curious what the original integrator capacitor specs are.
Digikey does have 680pf with a NP0 temp code, looks like either 630v or 3kv are in stock.
|
 |
|
|
Linear Mode
