Dim Bulb Tester tool current limiter for antique radios, amplifiers and vintage electronics. Car bluetooth upgrade All out of spec tubes

All out of spec tubes

the probes can be placed on either terminal regardless of polarity

filtering power lines

Power Down: Ensure the device under repair is completely disconnected from the AC mains or any external power supply

Dim Bulb Tester tool current limiter for antique radios, amplifiers and vintage electronics. Car bluetooth upgrade All out of spec tubesRetro Radio Shop Dim Bulb Tester The Dim Bulb Tester (DBT) an essential safety tool for the initial power up of vintage radios, amplifiers, and other restored electronics. The Dim Bulb Tester is arguably the single most important piece of test equipment on a vintage radio restoration bench. It costs very little, yet it can save a power transformer or your life, for that matter on every first power up of a restored piece. 1. Firstly, what Is a Dim Bulb