Siren light from running light
The siren light uses that general use motor help in the whirl lamp or refect go to around, which weigh very and when be usable go to for a long time will cause the wearing out. but if we modify light running pretend siren make get siren that weighs light and can be usable for a long time go up. How it works The work of the circuit will divide the work goes out to are 3 the part, be origin frequency part will compose IC1 555 numbers will perform frequency origin. Which fix get with the value of R1, …
1 Hz Timebase  circuit using IC-4017
I used input frequency 10Hz to output 1Hz.This is a 10 divider circuit. When we need a standard digital clock 1 Hz. but we have the input signal is square wave form 10 Hz so need to reduct it lower with digital frequency divider circuit 10 times I suggest that IC 4017 (Decade Counter / Divider with 10 Decoded) from the familiar to make a 10 LEDs running light circuits, but this circuit we used a frequency dividing circuit 10 times, too. It’s interesting because it uses a single IC run it. The circuit is very simple. Would not be …
0-99 counter by IC 4017×2
When you want the counter circuit since 0 arrive at 99. I thinks this circuit may on the same wave length you certainly. it uses IC LM4017 decade counter/divider follow circuit picture. When feed a signal clock at 14 pin cause the position logic at a pin output. From 0 to 99 for switch S1 perform choose RUN or Reset. Please see circuit picture will understand increasingly. Almost forget integrated number this circuit, want the fire feeds 3V low arrive at 15V because be IC digital CMOS there. Related Links More circuit digital counter More decade counter circuit More digital …