Reading time: <1 minut The presented project lights 3 LEDs consecutively. The circuit is relatively simple, being designed of 3 NPN transistors, 3 polarizing capacitors, 3 LEDs, a potentiometer and some resistors.
3,493 total views
Categories: DIY electronic kits
Various projects of DIY electronic kits brand ELECTROKITS and IPRS Baneasa.
Acoustic continuity tester with transistors - Interrupted wires checker
Reading time: <1 minut The frequency of the tone produced by the tester decreases with the increase of the measured resistance. Thus, it is impossible to damage the components or connections with this tester, because the potential difference between the input terminals is about 8V and the maximum current is 50uA.
1,777 total views
Zener for integration in circuits - Variable voltage source 3-25V
Reading time: <1 minut This circuit acts as a source of variable voltage between 3 and 25V, which can be easily inserted in any test project. The voltage can be varied with the help of the semi-adjustable POT potentiometer.
1,228 total views
Relay Blinker - Relay trip
Reading time: <1 minut The circuit shown uses 5 components and is easy to build. When the circuit is turned on, the LED lights up and the capacitor begins to charge. When the voltage on the capacitor is high enough, the relay pulls the clamp to the NO position (normal open / normal open);
2,468 total views
Stepper motor control circuit - Stepper motor operation
Reading time: 3 minute This project uses 3 integrated circuits (LM555, CD4017 and ULN2003). It is a recommended circuit for quickly learning the functionality of stepper motors.
4,862 total views