CENTRAD 751 - supplement (Techniek Radio/TV)

door Thierry Magis , east Belgium, 09.08.2010, 17:25 (5220 dagen geleden) @ Thierry Magis

To be complete :

the SELECTEUR (key) number 0 is the type of tube in test :

A : rectifiers and ordinary tubes
B : battery tubes (low emission)
C : small diodes
D : magic eyes

To adjust exactly the instrument on supply voltage (mains) : when making the first test of "ESSAIS ELECTRODES", adjust the potmeter "AJUSTAGE DU SECTEUR" to make the meter needle reaching the good position (indicated on the scale).

This instrument is very simple, just having basic functions, but works well.

When having tubes with grids (other than rectifiers), all must be connected to anode, corresponding key in position A.

Understanding the keys positions, you are able to imagine the combinations for tubes missing in the manual. It's very easy.

Regards
Thierry