.. voltage outputs of opposite polarity, are even more so. Figure 1’s version of a symmetrical 0 V to 10 V, 1.5 A lab supply implements an extra handy trick: computer programming via a single PWM output. Figure 1. LM337 , LM317 , and ...
.. is configured to run on a single 5-Vdc to 12-Vdc input, this transducer driver needs a 20-Vdc to 26-Vdc (V_DRIVE) power supply channel in addition to a 5-V regulated DC supply rail. So a dedicated power supply circuitry will be ...
.. a current proportional to the absolute temperature with a scale factor of 1 µA/Kelvin. Resistor R OS and the 15-V supply to which it’s connected sink a current equal to the room-temperature AD590 current of 298.2 µA. ...
.. better) precision of the LM337 internal voltage reference, rather than relying on the sometimes-dodgy stability of a logic supply rail as basic PWM DACs often do. Figure 1 shows the circuit. Figure 1. LM337 joins forces with 4053 CMOS ...
.. equal in those two transistors. The design is fault-tolerant and can be reverse-biased. For industrial designs at higher supply voltages, the majority of the forward voltage drop is across the collector/base of Q1 and Q3, the top ...
.. operation for V CC = 5 V 5% and IC 1A and IC 1A = 74HC14, but you may need to recalculate the values if you use a different supply voltage or a different inverter. Two possible devices to use for IC 1A are the 74HC14 and the 4093. The ...
.. peaking, use a smaller C X . For a more damped response, use a larger C X . Critical IC parameters are related to op amp supply current and parts with low supply current may require a somewhat larger C X , while parts with high supply ...
.. adjust the amplitude with resistor R13 to avoid clipping. The oscillator is powered by an unstabilized 6-16 V source. Power supply symmetry is ensured by the “active ground” circuit (Figure 5). Figure 5. An active earth circuit ...
.. bipolar signaling levels remain robustly noise and cable-length-effects resistant. Another useful feature is the bipolar supply voltages (usually 6 V) generated by typical RS-232 adaptors. These can be conveniently tapped into via ...
.. this charge pump. Leftmost, a relaxation oscillator is formed around IC1A. This is a classic circuit, modified for a single supply voltage, setting the bias halfway that of the supply voltage with voltage divider R3 and R8. The oscillation ...