Vermes
Advanced Member level 4
It is a construction of stereo power amplifier Holton 2x100W. It is based on Holton power amplifiers. Each channel consists of a pair of MOSFET transistors IRFP240 and complementary IRFP9240. Power supply consists of two Unitra Zatra TS120/13 transformers with power of 120VA each. One channel filtration is 4x4700uF 50V, so 18800uF in total for a channel, which gives 37600uF for the entire amplifier. Preamplifier is based on LM1036. There is an additional third transformer, which supplies the preamplifier, drive indicator and protection. Housing used was removed from Unitra toner. Upper cover was painted in cataphoresis method. Measured power is 39,4W at 12ohm.
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Link to original thread - Wzmacniacz Holton 2*100 W. Prezentacja