5-30 minuts timer circuit using IC 555
This is timer circuit uses a 555 IC timer. it small,compact,portable. For the snooze alarm by buzzer when some 5 to 30 minutes. It make easy with pcb layout
All controller, motor speed driver,switches,timer,sensor,and more : Timer switches • DC motor speed control • Delay timers • Light switchs • SCR controls • Light dimmers • Infrared remote control system • and more…
This is timer circuit uses a 555 IC timer. it small,compact,portable. For the snooze alarm by buzzer when some 5 to 30 minutes. It make easy with pcb layout
Many how to make simple touch switch circuit project. To build easy. Using transistor and IC like 555 timer, 4011 CMOS, flip-flop IC.
It will prevent the speaker from too over high power output may speaker damaged it use transistor and relay cut off as safe.
The Simple long duration timer circuit using OP-AMP, If build the RC timer only that long time delay we need too many resistors and capacitors may be error [...]
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…
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…
The AC light dimmer circuit can control light bulb or speed AC motor, we use triac and SCR as main,and adjust potentiometer and switch,more circuits [...]