za nizke moči pretvornika uporabite časovnik 555 ustvari 50 - 100 kHz kvadratni val za vožnjo dveh diod adapter (diode so obrnil iz redne dveh diod adapter, da ustvarjajo negativno napetost).Moral bi imeti -10 V, ki prihajajo iz katerih lahko uporabi regulator 7905 za pridobitev -5 V.
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