These devices are useful for controlling the AC line voltage, e.g, bringing up AC slowly when servicing vintage Vacuum tube Guitar and HI-FI Vacuum tube preamplifier/power amplifiers and tube type radios.
Also useful for adjusting filament voltage for preamp and power output tubes.
****now can you explain me how can I used this device on radio amps on repairs. PLEASE Iam working on tl-922a right now and before replace the new 3-500z bulb need to check all circuit working ok,and also how many amps do you recommend for safety 10,20 or 30 amps. thank you and 73's
Also useful for adjusting filament voltage for preamp and power output tubes.
****now can you explain me how can I used this device on radio amps on repairs. PLEASE Iam working on tl-922a right now and before replace the new 3-500z bulb need to check all circuit working ok,and also how many amps do you recommend for safety 10,20 or 30 amps. thank you and 73's