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Posts tagged automatic

Make Auto-Fan, 741 AutoScout temperature control – More circuit Temperature Control

Make Auto-Fan, 741 automatic temperature control – More circuit Temperature Control

Making VCO for MF-HF-VHF

It is a simple Colpits oscillator, but it has a 78L05 5v regulator (not shown) as the supply feed. The 22K and 33K resistors bias TR1 emitter to about 3v DC, which means that TR1 emitter can feed the CD4040 counter input directly when the synth is fed from a 10 volt supply. This is […]

The 80 Meter band Radio Circuit

The 80 Meter band Radio Circuit using TR 2N2222, C460, C372, C1162, C1173, C1226, D476, D68,D67,C901 The 80 Meter band Radio Circuit using TR 2N2222, C460, C372, C1162, C1173, C1226, D476, D68, D67, C901

Audio Amplifier Circuit using STK0029

Audio Amplifier Circuit using STK0029

3 Band Dual Graphic Equalizer Amplifier circuit

3 Band Dual Graphic Equalizer Amplifier circuit using KA22233 3 Band Dual Graphic Equalizer Amplifier circuit using KA22233

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