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| Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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18th Jan 2021, 2:53 pm
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#1 |
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Octode
Join Date: Mar 2015
Location: Yorkshire, England.
Posts: 1,300
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Output Wattmeter.
As Maplin are no longer with us, will the 0-300 uA meter pictured be suitable for Paul's Audio output level meter?
Should I tweak the value of any components or leave as-is to stop me from wrapping the pointer around the endstop? 
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Regards, Ken. BVWS member |
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18th Jan 2021, 6:57 pm
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#2 |
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Guest
Posts: n/a
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Re: Output Wattmeter.
It will be fine, no tweaks needed.
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18th Jan 2021, 7:18 pm
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#3 |
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Octode
Join Date: Mar 2015
Location: Yorkshire, England.
Posts: 1,300
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Re: Output Wattmeter.
Thanks for that, I'll get it ordered.
 I've got two Bush VTR 103's on the bench and I'm about to attempt my first alignment.
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Regards, Ken. BVWS member |
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19th Jan 2021, 12:36 am
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#4 |
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Dekatron
Join Date: Feb 2003
Location: Cottingham, East Yorkshire, UK.
Posts: 5,760
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Re: Output Wattmeter.
At worst, you might have to reduce the value of the series resistor, but it’s not a measuring device, it’s an output indicator so all you need to do in use is to set the receiver’s volume control to get the meter to about half scale so that as you align the receiver you can see the needle peak or fall.
It’s a useful little device - I’ve used mine several times since I built it almost a year ago: https://www.vintage-radio.net/forum/...d.php?t=163530 Hope that helps Ken
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David. BVWS Member. G-QRP Club member 1339. |
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