Manufacturer: W.M. WELCH Scientific Corporation (USA)
Model: Demonstration Oscilloscope, S#???
Vintage: 1962
Purpose: Demonstration, Education
Condition: Restored, Working
Comments:
I bought this one at a flea market and it did not work. The circuit is engraved in one of the side panels, the other side panel shows the principle of the CRT. The circuit is very simple. Note that there are no amplifiers for vertical and horizontal deflection.
There is no serial number imprinted / engraved and I am sure not many were built, because it can't work. At least not with the circuit shown on the panel. This is a nice trivia for oscilloscope afficionados. See if you can figure out what is wrong with the circuit.
Model: Demonstration Oscilloscope, S#???
Vintage: 1962
Purpose: Demonstration, Education
Condition: Restored, Working
Comments:
I bought this one at a flea market and it did not work. The circuit is engraved in one of the side panels, the other side panel shows the principle of the CRT. The circuit is very simple. Note that there are no amplifiers for vertical and horizontal deflection.
There is no serial number imprinted / engraved and I am sure not many were built, because it can't work. At least not with the circuit shown on the panel. This is a nice trivia for oscilloscope afficionados. See if you can figure out what is wrong with the circuit.
Documentation :