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Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
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13th Apr 2018, 4:58 pm | #1 |
Pentode
Join Date: Jan 2014
Location: Cape Town, South Africa
Posts: 214
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BUSH EBS 23 advice needed
http://mmrmedia.xs4all.nl/bbr/bushradio/index.html
Just confused on the wiring of the main double smoothing cap can. The connection from the half wave rectifier cathode (pin 7) goes to the one capacitor, the second pin is connected to a 5kOhm resistor , with wires disappearing into the depths of the chassis. Measuring each cap pin to chassis, gives a reading of 70mF, and across the two pins, the reading is 35mF. These appear to be connected in series? I'm wanting to replace this can with two individual electrolytics, but am not sure of the configuration. Would the can of the original caps be common, and connected to the chassis? I can only read 0-50 mF on the can, but I assume it says 50-0-50mF? Very confused. Any advice most welcome! Thanks. |
13th Apr 2018, 5:14 pm | #2 |
Dekatron
Join Date: Aug 2007
Location: W.Butterwick, near Doncaster UK.
Posts: 8,923
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Re: BUSH EBS 23 advice needed
The can very often is negative.If this is like the DAC10 ,then there will be a circuit top right of the forum.
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13th Apr 2018, 6:47 pm | #3 |
Hexode
Join Date: Nov 2013
Location: Lancing, West Sussex, UK.
Posts: 284
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Re: BUSH EBS 23 advice needed
Hi Paul,
PM sent. Regards Trevor. |
13th Apr 2018, 7:54 pm | #4 | |
Dekatron
Join Date: May 2010
Location: Greater Manchester, UK.
Posts: 18,676
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Re: BUSH EBS 23 advice needed
Quote:
By the way one of the terminals is often marked red, this just indicates the outer of the two concentric capacitors, and typically is the one that is fed from the rectifier.
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