This is many LED flasher circuit and with PCB layout using transistors astable multi vibrator as low frequency oscillator below more...[...]
Circuit diagram of Power Battery Saver using PWM 555
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…
You cannot use fluorescent light bulbs with battery 6V, 12V. But 3 circuits of Fluorescent Driver help you, get ideas projects or learning.
LED VU meter using transistor is analog circuit to show level of power audio signal. You can build 5 LED to 20 LED display with PCB.
This is a cheap home disco lights circuit. Friends like listening to Rock music,would like these circuits. It enhances your music listening more colorful. [...]