| The input impedance of a.c.-coupled op amp circuits depends almost entirely on the resistance that sets the d.c. operating point. If CMO...
| The input impedance of a.c.-coupled op amp circuits depends almost entirely on the resistance that sets the d.c. operating point. If CMO...
| As the title implies, the present circuit is intended to convert sinusoidal input signals to TTL output signals. It can handle inputs of...
| Button or coin cells that appear to be flat in their normal function may yet be discharged further. This is because in many cases, for i...
| The alarm circuit uses infra-red light beams to bridge distances between 3 m and 5 m (10 ft to 16 ft), but if the transmit diode is give...
| Excessive noise is bad for your health and bad for your surroundings. It cannot be said too often: too many young people go prematurely...
| The up/down drive is intended primarily for use with the tone controls described elsewhere in this issue.
| Together with a small program running under DOS, the circuit discussed in this article acts as an ADCbased voltmeter that allows you to ca...
| An RF signal generator is used for repairing radio/TV circuits, checking filters, aligning receivers, and for comparative sensitivity...
| If you employ several networked computers, you probably don’t have enough desk space, since most of the system components are duplicated o...
| The CS8412 is a monolithic CMOS device which receives and decodes audio data according to the AES/EBU, IEC958, S/PDIF & EIAJ CP-340 interf...