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tig ac inverter circuit

Abstract: 200 va inverter Circuit diagram tg3j uch21 JSS40 UCH4 UCH 21 Heptode
Text: UC H 4 UCH 4 3 H 3T T r io d e -h e p to d e The UCH 4 is a triode-heptode the characteristics of which correspond almost entirely to those of the UCH 21, and reference should be made to the des­ cription of that valve. In the UCH 4, too, the triode grid and the third grid of the heptode are quite se­