|
Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders. |
|
Thread Tools |
25th May 2022, 6:03 am | #1 |
Heptode
Join Date: Aug 2009
Location: Carshalton, Surrey, UK.
Posts: 735
|
Venner TSA6634a/2 Cap question
Hi,
I am looking at an old Venner Counter. the mains filter cap ( which is a metal can with 3 leads ) seems to have failed. As a Temporary measure I have cut it out. Anyone know if I should try to get an all in one replacement or use separate caps ? On Another question the electrolytic caps on what I assume to get the input board might need to be replaced due to old age. they are 80 uf 6.4 volt. Can I use 100uf caps to replace them ? there are two 32uf caps as well. Should I use 22uf or 47 uf to replace them ? Many thanks, again.
__________________
Regards Peter B |
25th May 2022, 6:19 am | #2 |
Banned
Join Date: Jun 2015
Location: Mareeba, North Queensland, Australia
Posts: 2,704
|
Re: Venner TSA6634a/2 Cap question
Yes you can !!.
In both cases. 100uF is a "direct " replacement for 80 uF. Electrolytics are "generally " rated as minus 20 % and plus 50 %. 33 uF can be 22uF or 47uF. Considering the cost difference of about 3 pennies, I would go, 100 uF, and 47 uF. Make sure the working voltage ratings are HIGHER than the origionals. I havent seen 6.4 volts caps since I was a kid ( 60 years ). Joe |
25th May 2022, 7:30 pm | #3 |
Octode
Join Date: Jul 2009
Location: Cheshire, UK.
Posts: 1,738
|
Re: Venner TSA6634a/2 Cap question
I've had the same filter fail in my Venner counter a few years ago, I used a plastic can delta filter from LCR capacitors, the local Maplin had them, unfortunately I can't seem to find anyone selling them now.
https://www.lcrcapacitors.co.uk/wp-c...ta-filters.pdf David |
2nd Jun 2022, 11:02 am | #4 |
Heptode
Join Date: Aug 2009
Location: Carshalton, Surrey, UK.
Posts: 735
|
Re: Venner TSA6634a/2 Cap question
Hi, thank you both for the info.
I have checked the TSA6674 counter I have as well. It uses the same input board as the TSA6634/a . so I will change the capacitors on the input board in both units. the Power supply unit is different in both units.
__________________
Regards Peter B |