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YO5ER
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Отправлено: 01.04.16 14:37. Заголовок: EB104 by YO5ER
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qlc
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Сообщение: 59
Зарегистрирован: 13.02.12
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Отправлено: 12.04.16 13:08. Заголовок: Dear Septy! You'..
Dear Septy! You've made nice work! Looked your pictures in a hurry I can advise you to replace your 10cm FAN, placed on heatsink, by 12cm one, used originally for PC box, for example ZALMAN ZM-F2 PLUS. This will allow you to route a part of air across the PCB top, thus cooling the feedback resistors, feedback and output transformers. We are using two FANs usually, one on heatsink and second on enclosure, to pull air out of box. Placed in front of heatsink indeed. I suggest you to use +12VDC supply instead of +50V for initial testing. PA will give you about 30-50W output with this drain voltage. When you sure that all protections and band switching is correct - replace it by high voltage power supply. If you have any specific questions about tuning of boards or wiring them together, please ask me direct to ua3qlc@gmail.com . 73! Victor UA3QLC
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