Here is the circuit diagram of simple multitone alarm. This is a low cost circuit which is simple and easy…
This easy electronic buzzer circuit built based on timer works for gaining the frequency. The IC timer NE 555 used…
This is the circuit diagram of dancing LEDs which consists of 10 units LEDs. The 10 dancing LEDs circuit works…
Here the analog flip-flop circuit which built based on 2 transistors work as switch. This is very easy made and…
This is the circuit diagram of sound effects generator. All sounds in this circuit are generated by HT2884. The HT2884…
This is electronic bird chirp sound generator circuit which used to produce a sound like bird's chirp. The transformer is…
This is Electronic Siren circuit diagram which use standard discrete components. The sound produced imitates the rise and fall of…
This is the LED flashing circuit, since the shape used in this circuit was hearth shape, then we call it…