Timer Touch Switch Circuit 555
555 timing IC made ??with a simple circuit than the number 2 pin trigger tip 220nF capacitor out according to the signal pin 3 of the output is rectified and the relay goes to the relay is energized contacts... Electronics Projects, Timer Touch Switch Circuit 555 "555 timer circuits, analog circuits projects, simple circuit projects, " Date 2016/05/02
555 timing IC made ??with a simple circuit than the number 2 pin trigger tip 220nF capacitor out according to the signal pin 3 of the output is rectified and the relay goes to the relay is energized contacts connected device opens or by connection closes two different modes can be
22UF 470k resistor and capacitor values ??can be adjusted by changing the release time of the relay formula 1.1 xrxc values ??are stretched büyüdükc time I’ve used this value when you upgrade 470k for timing relay is prolonged residence time of the towed
Timer Touch Switch Circuit Test
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Simple Electronic Piano with PIC16F84A
The PIC has a white arrow in the transistor and the clock is a little to the right.
Pull-down resistor Tact switches are in line with the lower back. PIC fast 200ns port in the meantime and have pressed any button to check each one to switch ON, OFF is a pseudo-noise in the oscillator. The PIC is more convenient and I was able to adjust the volume to a variable resistor connected to the base of the transistor because it connects directly drive the output speaker.
PIC16F84A Electronic Piano