[Heathkit] Rectifier tubes

[Jim Brannigan]

A tube manual will indicate the voltage drop of the tube diodes.
Put a milliammeter (VOM) in series with the output of the power supply.
Use Ohm's law to determine the resistance and wattage of the resistor..

Jim
> I'm resurrecting my IO-18 Scope, and IG-72 Audio Generator.
> Both have bad retifier tubes.  IO-18 has 1V2, the IG-72 has a 6X4.
>
> Has anyone had success replacing rectifier tubes with silicon diodes, and
using
> a droping resistor to compensate for the lower volage drop than the tubes.
>
> I have no idea what value resistors to use.
>
>      Thanks,
>        Don