Originally posted by pulseinduction
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2. any NE5534 and TL071 ( by both, Ne5534 can be fake)
3. any CD4093 or HEF4093
4. HEF4066BP (better) or CD4066
5. any LM358 or TL082
6. irf9630 (better) or irf9640
7. lm7805
8. ICL7660
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