View Full Version : Cathode Current Measurement

05-11-2016, 11:15 PM
I have a CTC 39, RCAs last tube set...I measured the current flowing through the horizontal output without the capacitor and then read that I need a capacitor across the meter. What does the capacitor do across the meter when measuring current and why is it important?

05-11-2016, 11:40 PM
The capacitor gives you an accurate reading of average current because some meters may not read the correct average (DC) value of a varying waveform.