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Tube distortion pedal circuit diagram. IC1: 747 dual op-amp; other ICs may be substituted, but the pinout will differ, so the datasheet should be checked. IC2: LM340K-12V voltage regulator. All resistors are 1/2 W. The bridge rectifier is a...
A field effect transistor amplifier features a fixed bias input source with feedback, resulting in very high input impedance and low capacitance. It drives a field effect transistor or emitter follower, despite having a very low output impedance, utilizing...
When the light beam that falls on the CDS photocell is interrupted, the transistor (EN3904) conducts, triggering SCR1 (CI06) and activating the alarm bell. SI resets the SCR. The alarm bell should be a self-interrupting electromechanical type. The lamp...
This device functions as a convenient tool for testing infrared (IR) remote control transmitters used with televisions, VCRs, and similar devices. The IR signals emitted from a remote control are detected by the IR sensor module within the tester,...
This example demonstrates a robust design featuring novelty lights that flash in a specific sequence, utilizing a 1-3-2-4 vault chase mode. The circuit includes diodes VD1 to VD4, which form a bridge rectifier, converting AC voltage to a full-wave...
This circuit operates by activating a headlight when the push-button PB1 is pressed. The headlight remains illuminated for a predetermined duration, which can range from several seconds to minutes, before automatically turning off. When PB1 is engaged, capacitor C1...
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