27-10-2015, 05:59 PM
Yes, n a good battery, with the test leads connected as they are, you'd expect to see +1.5V, and if you move the negative prod to the other terminals, leaving the positive prod where it is, you'd expect to see progressively +3V, +4.5V, +6V, +7.5V and +9V. As rob says, because the + lead is connected to chassis, and the - lead to the grid, if you then checked the voltage between the grid and chassis, you'd see that the grid is negative relative to the chassis according to the amount of grid bias voltage you've selected on the GB battery.
See rough sketch attached.
Hope that helps.
Hmmm, I guess you might be in 'Melody Maker mode' Nick, in which case this might interest you, if you haven't already seen it:
https://cossor.com/how-to-make-a-grid-bias-battery/
See rough sketch attached.
Hope that helps.
Hmmm, I guess you might be in 'Melody Maker mode' Nick, in which case this might interest you, if you haven't already seen it:
https://cossor.com/how-to-make-a-grid-bias-battery/
Regards, David.
BVWS Member.
G-QRP Club Member 1339.
'I'm in my own little world, but I'm happy, and they know me here'
BVWS Member.
G-QRP Club Member 1339.
'I'm in my own little world, but I'm happy, and they know me here'
