![What a vacuum tube device sees when it's filter capacitors are bad. [1912x2736 - 555KB]](https://pic8.co/sh/mpF71c.jpg){kind=link}
You're a fucking Nerd. Merry Christmas bro.
You're a fucking Nerd. Merry Christmas bro.
Merry Christmas to you as well.
Merry Christmas to you as well.
Pretty much any vacuum tube device is going to require some work to bring it online before use. This Heathkit AF-1 I'm working with is no exception. The device is kind of not working right now, so the first thing to check is the power supply.
The trace on my scope should be a nice clean DC with minimal (mV) of ripple. This one is showing 11.6V peak to peak, so the AC is basically going through the filter like piss through a tin horn. It still comes up (see the purple regulator tube) but doesn't do anything and won't do anything correctly until I replace the big filter capacitors first.
Pretty much any vacuum tube device is going to require some work to bring it online before use. This Heathkit AF-1 I'm working with is no exception. The device is kind of not working right now, so the first thing to check is the power supply.
The trace on my scope should be a nice clean DC with minimal (mV) of ripple. This one is showing 11.6V peak to peak, so the AC is basically going through the filter like piss through a tin horn. It still comes up (see the purple regulator tube) but doesn't do anything and won't do anything correctly until I replace the big filter capacitors first.
So, not a correct shape sine wave is what I see.
So, not a correct shape sine wave is what I see.
Yes. It should be a very small ripple, instead of the triangular wave you see.
Yes. It should be a very small ripple, instead of the triangular wave you see.
These will do the trick, trust me bro. https://pic8.co/sh/eRkWyi.png
Burned in already, what a bargain!
These will do the trick, trust me bro.
https://pic8.co/sh/eRkWyi.png
Burned in already, what a bargain!
https://www.ebay.com/itm/186608124764
Thanks, but no.
Thanks, but no.