This is definitely an ultra-sensitive fire sensor that exploits the direct piezoelectric property of an ordinary piezo component to recognize…
Above diagram is a very easy and efficient receiver for actuating garage doors, starter motors, alarms, warning systems and many…
Here is the Hi-Fi compressor circuit with pre-emphasis. The above diagram is a circuit for a high fidelity compressor which…
Here is a simple Tachometer schematic. The basis of the frequency converter circuit-current, which converts the input signal into a…
This is the DOD Overdrive 250 preamp circuit diagram. The DOD Overdrive 250 is Yet Another 741 With Two Diodes…
This LAN tester circuit originally designed by Vassilis Stergiopoulos. This LAN tester circuit optionally has two designs. The first design…
This is the circuit diagram of DOD FX75 Flanger guitar effect pedal. The circuit drawn by Fabian P. Hartery. Featuring…
This is a DC motor controller circuit, built using transistor TIP31 based on H-Bridge concept. The switch S1 and S2…
This is a very easy build, simple metal detector circuit, built based on a CS209A IC. The circuit will give…
The following circuit is a simple, cheap and easy build motorcycle alarm. The circuit just required 2 transistors to drive…