Dual can capacitor replacement - UK Vintage Radio Repair and Restoration Discussion Forum

cableguy73 · 6th May 2021, 2:11 pm

Hi,
I am restoring a Philips B4G01U radio.
The dual can capacitor contains 1x 100 Mfd @ 275 v0lts and 1x 50 Mfd @50 volts.
Have sourced 100Mfd but cant seem to locate a 50Mfd @ 275 volts.
Any suggestions welcome.
Regards
Mike

Cobaltblue · 6th May 2021, 2:15 pm

Try 47uF which is the modern equivalent.

Cheers

Mike T

cableguy73 · 6th May 2021, 2:21 pm

Will Research online,
Thanks
Mike

cathoderay57 · 6th May 2021, 2:25 pm

Either the 47uF 450v or the 68uF 400v here will do the job https://www.cricklewoodelectronics.c...ce.html?page=2 Jerry

turretslug · 6th May 2021, 2:26 pm

Is the 50uF 50V component a cathode decoupler? If so, I would be inclined to just make it a separate 47uF 50 or 63V unit anyway- combined HV/LV units make me worry about the effects of internal faults! (admittedly probably unusual). Dual/multiple caps are a manufacturing economy as opposed to a performance advantage as it is.

cathoderay57 · 6th May 2021, 3:55 pm

Quote:

Originally Posted by turretslug

Is the 50uF 50V component a cathode decoupler?

No, it's HT reservoir. The 50v was a typo. Jerry

6th May 2021, 2:11 pm	#1
cableguy73 Diode Join Date: Apr 2021 Location: Sunderland, Tyne and Wear, UK. Posts: 2	Dual can capacitor replacement Hi, I am restoring a Philips B4G01U radio. The dual can capacitor contains 1x 100 Mfd @ 275 v0lts and 1x 50 Mfd @50 volts. Have sourced 100Mfd but cant seem to locate a 50Mfd @ 275 volts. Any suggestions welcome. Regards Mike

6th May 2021, 2:15 pm	#2
Cobaltblue Moderator Join Date: Dec 2010 Location: Exeter, Devon and Poole, Dorset UK. Posts: 6,864	Re: Dual can capacitor replacement Try 47uF which is the modern equivalent. Cheers Mike T __________________ Invisible airwaves crackle with life or at least they used to Mike T BVWS member. www.cossor.co.uk

6th May 2021, 2:21 pm	#3
cableguy73 Diode Join Date: Apr 2021 Location: Sunderland, Tyne and Wear, UK. Posts: 2	Re: Dual can capacitor replacement Will Research online, Thanks Mike

6th May 2021, 2:25 pm	#4
cathoderay57 Nonode Join Date: Oct 2017 Location: Bristol, UK. Posts: 2,384	Re: Dual can capacitor replacement Either the 47uF 450v or the 68uF 400v here will do the job https://www.cricklewoodelectronics.c...ce.html?page=2 Jerry

6th May 2021, 2:26 pm	#5
turretslug Dekatron Join Date: Nov 2011 Location: Surrey, UK. Posts: 4,394	Re: Dual can capacitor replacement Is the 50uF 50V component a cathode decoupler? If so, I would be inclined to just make it a separate 47uF 50 or 63V unit anyway- combined HV/LV units make me worry about the effects of internal faults! (admittedly probably unusual). Dual/multiple caps are a manufacturing economy as opposed to a performance advantage as it is.