CENTRAD 751 - supplement (Techniek Radio/TV)

door Thierry Magis , east Belgium, 10.08.2010, 17:35 (5219 dagen geleden) @ Koen

Hello

on the 751, just place the "selecteur" number 0 on position "A" , and of course the good combination on others selecteurs for your tube!

You should have an indication on the meter during emission test, if no the tube is dead ! With some kind of tubes you have to wait a moment until it reaches the temperature.

The 752 is more reliable (and recent) tester, with more functions, than the 751. I owned this two models but just kept the 752.

If you have problems to use the 752, feel free to ask me. I know this appliance very well and tested several hundreds of tubes with. I never seen translations of the french manuals.

Tip with the 752 : one of the critical points to check in this tubetester is the heater voltage selector and pin selectors. There is often bad contacts in this selectors, and the heating voltage drops when there is a tube on test ! Obviously, when it's like that the measure result is bad because the tube doesn't receive the correct voltage (or any voltage at all) !

regards
Thierry