- L J Electronics
- Laboratoire Electro Acoustique
- Lakeshore Industries
- Lambda Electronics Corporation
- Lear Jet Stereo Inc.
- LG Precision
- Lowe Electronics Limited
Valve characteristic meter
The Model TV-12 Trans-Conductance Tube Tester was designed to test tubes under dynamic conditions closely resembling the operating conditions of the tube. It performs this function by measuring the plate current of the tube under test while under the direct influence of an in-phase grid voltage applied to the tube. (See Page 9 for a detailed explanation of the unique circuit employed in the Model TV-12) With its simplified controls, fast-acting roll chart, self-cleaning lever switches ...