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Variable Power Supplies

Variable Power Supplies circuit using 2N3906, LM317, LM337, LM324, MJ2955, 7805, 2N3055, 2N3905 Parts: P1_500R P2_10K R1,R2_2K2 R3_330R R4_150R R5_1R C1_3300µF C2_1µF D1,D2_1N5402 D3_5mm Q1_BC182 Q2_BD139 Q3_BC212 Q4 _2N3055 T1_220V Primary, This Variable Power Supplies circuit has a current limit feature, in case there is a short circuit or other problem places. Here’s a circuit […]

Universal Laptop Power Supply

Universal Laptop Power Supply using LM741 and 2N3055

Oscillator Circuit using 555

Oscillator Circuit using 555

linear power supply circuit

linear power supply circuit using LM317, CD4541

Free Usb Mp3 Player Circuit Board Project

Free Usb Mp3 Player Circuit Board Project

Best and simple Power Amplifier circuit diagram using 2N3055 NPN type power transistor

Best and simple Power Amplifier circuit diagram using 2N3055 NPN type power transistor The optimal supply voltage is around 50V, but this amp work from 30 to 60V. The maximal input voltage is around 0.8 – 1V. The and transistors can be any NPN type power transistor, but do not use Darlington types… The output […]

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