Alarm
Safer Security System Alarm
Here the circuit diagram of safer security system alarm. There are many security systems use a closed loop of wires…
55 years ago
Sound Effects Generator (8 different sound) based IC HT2884
This is the circuit diagram of sound effects generator. All sounds in this circuit are generated by HT2884. The HT2884…
55 years ago
Electronic Siren
This is Electronic Siren circuit diagram which use standard discrete components. The sound produced imitates the rise and fall of…
55 years ago