Simple Switch off delay circuit using 2N4871
This circuit prevents surges. From the opening is switched off or power failure. The damage to electrical appliances.
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July 26, 2017
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…
On-off SCR control circuit with logic gate IC
This is On-off SCR control circuit with logic gate IC. SCR will turn ON when input A gets bias current. But SCR will turn off if its input B gets current.
July 18, 2017
Surge protection circuit for power supplies
The surge protection circuit important! Sometimes, our electrical appliances may damage easily by little high voltage surges. We can protect this problem.
June 26, 2017
Cheap emergency light circuit using D313
The emergency light circuit will have battery backup charge to stored, But when electricity failure, it does opposite is battery will discharge into lamp
June 22, 2017
Professional solid state relay circuit
The special Relay that used replace normally relay, very fast contact load, low voltage input 3V to 24V only
June 20, 2017
Simple Overload protection circuits
This is overload protection for transformers and load, is simple circuit cut off-on by relay. And so fast switch witch SCR driver. can set sensitive by VR1
June 17, 2017
SCR DC motor speed control circuit using IC-CMOS
This is speed motor controller circuit of 12V DC motor. as SCR DC motor speed control circuit using IC-4081 CMOS. You can adjust the speed of rotation [...]
June 16, 2017