Please click your language flag. Bitte Sprachflagge klicken.

C453 (C453)

Jacob Roschy Martin Renz Ernst Erb Bernhard Nagel Eilert Menke 
Please click the blue info button to read more about this page.
Forum » Valves / tubes - Semiconductors » VALVES/TUBES / SEMICONDUCTORS in RADIOMUSEUM » C453 (C453)
Peter den Boer
Peter den Boer
NL  Articles: 38
Schem.: 0
Pict.: 0
17.Aug.11 11:56

Count of Thanks: 1
Reply  |  You aren't logged in. (Guest)   1

The original C443 had an amplification factor of 43, the C453 had an amplification factor of 53. When an amateur in 1932 replaced a good C443 for the new C453 in order to enchance performance of his radio, nothing changed. When he scratched some paint of the top of his new C453, he saw C443 appear. There was a lot of fuss about this matter. At the end Philips apologized for redesignating a batch of C443 into C453. As for defence they stated that the C443 was that much improved, that it in fact became a new type, the C453. There was also a simular case with redesignated 506's into 1823.