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 Capacitor/resistor proximity
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 Return to top of page · Post #: 1 · Written at 1:36:13 PM on 27 September 2020.
Destino's Gravatar
 Location: Bells Beach, VIC
 Member since 20 July 2020
 Member #: 2428
 Postcount: 39

Hi there.

I notice that in the valve radio that I am changing out capacitors at the moment that there are a number of capacitors that have a resistor essentially wrapped in parallel with the capacitor.

I'm just wondering if this proximity is important to maintain or was this just the way things were done. The capacitors that I am changing in are considerably smaller in physical size although electrically equivalent. Consequently there is now a fair bit of spare space to locate these components.

Thanks

Peter


 
 Return to top of page · Post #: 2 · Written at 3:04:01 AM on 28 September 2020.
Robbbert's avatar
 Location: Hill Top, NSW
 Member since 18 September 2015
 Member #: 1801
 Postcount: 1522

Wouldn't expect it to matter. Make it tidier if you wish.


 
 Return to top of page · Post #: 3 · Written at 9:08:49 AM on 28 September 2020.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4546

You will find that those are predominantly Cathode bypass caps and resistors and in some circumstances, I also do that.

Marc


 
 Return to top of page · Post #: 4 · Written at 10:32:52 AM on 28 September 2020.
Destino's Gravatar
 Location: Bells Beach, VIC
 Member since 20 July 2020
 Member #: 2428
 Postcount: 39

Thanks for that folks.


 
 Return to top of page · Post #: 5 · Written at 1:27:15 PM on 28 September 2020.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 2018

Best if you don't do it with a resistor that gets hot and an electrolytic capacitor. Heat is the enemy of electrolytics.


 
 Return to top of page · Post #: 6 · Written at 8:43:57 PM on 28 September 2020.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4546

In a lot of cases you use an RB cap which can be mounted on the socket (keep leads long if you do that).


 
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