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Archives for Microcontroller

Incubator Timer Circuit

Incubator Timer Circuit The circuit of the proposed incubator egg timer using LM741 This Egg Timer is quick, easy to use

Audio Circuit

Audio Circuit using IC1 NE5534 and TR  2SK135, 2SJ50 Part Audio Circuit : R1 33 kΩ         C1 1nF 63V                    D1 1N967B zener 18V 0.5W R2 6.8 kΩ        C2 47 µF 40V               D2 1N967B zener 18V 0.5W R3 22 kΩ         C3 100 nF 63V            D3 1N4148 R4 100 kΩ       C4 100 nF 63V            […]

5 BAND Audio GRAPHIC EQUALIZER

5 BAND Audio GRAPHIC EQUALIZER AMPLIFIER using KA2223 5 BAND Audio GRAPHIC EQUALIZER AMPLIFIER using KA2223 The KA2223 is a monolithic integrated circuit consisting of an operational amplifier with five resonant circuits and a active filter, an it is suitable for radio-cassette tape recorders, car stereos or music center audio systems. FEATURES Tone control with […]

Big Power Amplifier Circuit

Big Power Amplifier Circuit using IRF640, IRF9640, 2N5551, 2N5401, 2N2222A, BD139, 2N2907A

PCB Booster tube and light flow control valves using 12AU7

PCB Booster tube and light flow control valves using 12AU7 A 12AU7-based booster and light overdrive running at 9 volts.  A very fun little circuit that has a minimal parts count and actually generates a good amount of boost and some overdrive. You can even run this one of a 9 volt battery if you […]

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