28-01-2018, 11:52 AM
Oops, I made a mistake measuring the HT I was measuring from the feed to the energising coil to chassis, which is in effect the volt drop across the coil.
The HT is actually a Healthy 205 volts.
The on/off volume control pot that is fitted is an RS 10k one, so it is not correct. I have improved the smoothness of the top end of the volume a little, but I wonder if I can get hold of a vintage 20k switched pot. Do you think linear would be best in this situation. I think I will put a request in the wanted section.
Maybe another reason for putting the volume control on the aerial circuit would be that low ohms value pots were easier to make?
Still having problems with the tuning capacitor slow motion drive tending to slip. It could really do with a new outer bearing housing being made.
Mike
The HT is actually a Healthy 205 volts.
The on/off volume control pot that is fitted is an RS 10k one, so it is not correct. I have improved the smoothness of the top end of the volume a little, but I wonder if I can get hold of a vintage 20k switched pot. Do you think linear would be best in this situation. I think I will put a request in the wanted section.
Maybe another reason for putting the volume control on the aerial circuit would be that low ohms value pots were easier to make?
Still having problems with the tuning capacitor slow motion drive tending to slip. It could really do with a new outer bearing housing being made.
Mike
