This is power battery saver circuit using an IC-555 timer. The lamp is controlled with a PWM mode by adjusting of potentiometer VR1. And, PNP power transistor drives a lamp. Sometimes…
If you are looking for a power supply circuit. Here may be the choice you need. over 150+circuits with PCB and easy to build, low price for a beginner.
This is High power siren circuit with small PCB size, using CD40106 and four transistor TIP31-TIP32 increase current to horn speaker 20W, 4-8ohm. , and
IC 4017 CMOS-Decade counter/divider. When we build the 10 LEDs running light for hobby. Often use IC-4017. This really neat chip contains counter,decoder[...]
It is a modern circuit, Thus you can buy all components in the local store or buy KIT. And the important thing is the overcurrent protection.
It is easy if you control DC motor in a single direction. Sometimes you think. How to rotate DC motor in both direction. You are not worried. There are many…
High performance LM3914/LM3915 VU meter circuit projects that widely popular can display with 20 LEDs on stereo or mono with 10 LEDs for all audio system. [...]
