Tapping morse code circuit
Morse code is a code of signals used in military communications in the past. But today, it is also common among surfers radio The percussion Morse code as a standard in radio communications. This circuit is a demonstration of tapping Morse code basics. Enter the power supply circuit is on, press the S1 Charset circuit IC1 is run by the generator frequency Per cycle, which is a sensitive multi-Stable Brett Foster is R1, C2 and VR1 determines the frequency of the output pins 3 go to the VR1 speakers for optimized sound to very sharp pointed at.
LED Chaser Circuits
If you want to build a 10 LED Chaser circuit we suggest this circuit first. It uses popular IC is a simple and affordable IC-4017_decade counter and IC 555
Simple 555 ICs Tester Circuit
Most IC-555 is used to generate frequency, and sometimes we need to know. Is it good or bad? But normal multimeter cannot check it. Thus, I make a simple 555 ICs tester circuit. Which is tested correctly and faster. How it works Resistors R1-R3 acts as limit current and reduce voltage to LED1-LED3. Which is LEDs show state on “Trigger” or “Low” or “High”. The Diode D1 is set voltage to pin 2 less than 1/3 VCC (0.7 volts). When slide switch S1 at position 2 (Trigger IC). Before apply voltage to this circuit, we must put the test IC …
Siren light from running light
The siren light use 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 weigh light and can be usable for a long time go up. 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, R2 and C1. …