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P_CH_I_REG PUBLICCurrent regulator based on P-Channel MOSFET. Adjust R1 to change current - voltage drop should equal Q2's V-EB threshold. by DennisT1 | updated April 01, 2013 |
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555 PWM PUBLICPWM with 555. Timer gens triangle waveform; op amp modulates it. by DennisT1 | updated March 24, 2013 |