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| Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
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8th Oct 2019, 9:45 am
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#1 |
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Octode
Join Date: Nov 2003
Location: Bath, Somerset, UK.
Posts: 1,805
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Philips Austria BA221U "Stradivari"
Just a quick one, need to know the value of the HT load resistor that goes between the on/off switch and the UY41 anode. This one is wirewound and is open circuit.
Neil
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preserving the recent past, for the distant future. |
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8th Oct 2019, 10:58 am
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#2 |
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Moderator
Join Date: Jun 2003
Location: Oxford, UK
Posts: 27,944
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Re: Philips Austria BA221U "Stradivari"
Radiomuseum appear to have a circuit: https://www.radiomuseum.org/r/philip...ri_ba221u.html
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8th Oct 2019, 11:28 am
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#3 |
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Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,535
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Re: Philips Austria BA221U "Stradivari"
R19 160R
R18 135R + 675R R20 1k5 HTH
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8th Oct 2019, 11:56 am
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#4 |
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Octode
Join Date: Nov 2003
Location: Bath, Somerset, UK.
Posts: 1,805
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Re: Philips Austria BA221U "Stradivari"
Thanks both of you, 160 ohms seems about right,
Neil
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preserving the recent past, for the distant future. |
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8th Oct 2019, 3:21 pm
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#5 |
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Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,535
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Re: Philips Austria BA221U "Stradivari"
You're welcome.
BTW R19 isn't an HT load resistor it's a surge limiter to keep the rectifier happy....
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....__________ ....|____||__|__\_____ .=.| _---\__|__|_---_|. .........O..Chris....O |
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