My Design Idea (DI), “Flip ON Flop OFF for 48-VDC systems“ ( Ref. 1 ), was published and referenced Stephen Woodward’s earlier “Flip ON Flop OFF” ( Ref. 2 ) circuit. Other DIs published on this subject matter were for ...
Analog topologies abound for converting current to voltage, voltage to current, voltage to frequency, and frequency to voltage, among other conversions. Figure 1 joins the flock while singing a somewhat different tune. This current, voltage, and ...
Some applications require a hot-swap controller, a circuit-breaker function, or both for dual-polarity, dc-input power-supply rails. In some hot-swap cases, the requirement is based only on inrush-current considerations. Control of the inrush ...
A simple, permanent-magnet dc motor is an essential element in a variety of products, such as toys, servo mechanisms, valve actuators, robots, and automotive electronics. In many of these applications, the motor must rotate in a given direction ...
Often you want to turn on and off power to a device with a single pushbutton switch. The circuit below performs this logic function with just a few parts and can operate from DC supplies between +3 V to about 15 V. It uses two inverters within a ...
This circuit uses a low power op Amp and a p-channel FET to form a diode function with a very low 0.05 volt voltage drop. With the selected FET, the circuit can handle up to 2 Amps of current. Higher currents are possible with a FET with a lower ...
I designed the circuit in Figure 1 as a part of a data transmission system that has a carrier frequency of 400 kHz using on-off keying (OOK) modulation. Figure 1. A digital frequency divider circuit that detects the presence of a 400-kHz carrier, ...
Up front: some background. The air-temperature sensor attached to my (home-brew) rain gauge became flaky. Short-term solution: fix it (done). Longer-term goal: improve it (read on). That sensor is a standard Vishay NTC (negative temperature ...
Two inexpensive ICs divide a TTL clock signal by 1.5. By following the circuit with another flip/flop, you could also generate a divide by three function. Materials on the topic Datasheet Texas Instruments SN74HCT02 Datasheet Texas Instruments ...
A common problem for power-supply designers is to create a compact, dual-polarity step-down converter. If space and cost are not concerns, the obvious solution is a pair of DC/DC converters, one for each output. But space and cost are almost always ...