1941 GE J620 Ye old ballast tube

[dieseljeep]

Originally Posted by Electronic M

Actually the online calculators take numerical input for frequency and capacitance and or desired impedance do the math and give numerical output...
I think I used the same calculator to try and whip up a ballast for my TS-18, but the value given didn't produce the right results on the variac and experimentally finding the value showed me I didn't have the caps I needed on hand...I ended up temporarily making one out of resistors I had, and plan to order the caps I need next time I stock up.

The TS18, I have has a glass Amperite replacement ballast tube that was available at the time.