| In measurement and control systems a common method of sending control or measurement data over long distances is by means of a ‘current loop...
H. Bonekamp (119)
| This circuit makes it possible to simulate a variable capacitance, with the value set by a potentiometer. The amplification stage around IC1...
| We have already published designs that use a transistor junction operating in Zener breakdown as a noise source. Anyone who has experimented...
| This circuit is a relatively simple instrumentation amplifier that can be powered from a single 5-V supply. The output voltage is given by t...
| This circuit allows an ECG signal to be displayed on an oscilloscope. Opamps IC1a, b and d form an instrumentation amplifier with a gain of...
| This circuit provides a simple means to determine the voltage of a low-impedance voltage source. It works as follows. P1, which is a 1-W pot...
| Suppose you want to make a counter that can count from 0 to a certain decimal number M. If you want to implement this as a binary counter, y...
| This circuit is eminently suitable for adding bipolar input capability to the unipolar A/D converter of a microprocessor circuit (in a data...
| If a transistor junction operating in Zener breakdown is used as a noise source, the amplitude of the noise signal is asymmetric. This probl...
| Mains adaptors are used more and more frequently to power small equipment. A drawback of this is that even when the equipment is swit...