Lamp and Fuse Tester Circuit Diagram
Why a lamp tester or fuse tester? Testing cables, wires, lamps… belongs to a repair job and sometimes this becomes too cumbersome since one has only two hands and too often, one has to hold...
Reliable Car Battery Tester Circuit Diagram
This circuit uses the popular and easy to find LM3914 IC. This IC is very simple to drive, needs no voltage regulators (it has a built in voltage regulator) and can be powered from...
Mobile phone Circuits to Get Even smaller
Transceivers, appliances such as mobile phones that can send and receive messages, have become smaller and smaller over the last few years, but users are about to experience a new meaning in miniaturisation. Research at...
MT8870 DTMF Telephone Dial Tone Decoder Circuit Diagram
Build a MT8870 DTMF Telephone Dial Tone Decoder Circuit Diagram. This is a simple MT8870 DTMF Telephone Dial Tone Decoder Circuit Diagram. In this circuit one common DTMF receiver IC is the Motorola MT8870 that is widely...
Telephone for VoIP gate Circuit Diagram
A project of Telephone for VoIP gate Circuit Diagram. Calls over the Internet can be in several different ways. For households with a permanent connection to the Internet, it is advantageous to use different IP phones...
Telephone Record Control Circuit Diagram
This circuit will allow you to connect any tape recorder that has a mic and remote input to a phone line and automatically record both sides of a conversation when ever the phone is in...
Telephone Tapping Indicator Circuit Diagram
This simple circuit can indicate a misuse or tapping of Telephone line through a loud alarm. The circuit is too simple and can be easily assembled on a common PCB. Line voltage of Telephone lines...
Automatic Headlight Brightness Switch Project
Driving the highway with your high-beam headlights can really increase your visibility, but can be a blinding hazard for other drivers. This simple circuit can be wired into your headlight switch to provide automatic...
