.. and ensures that Q 3 is biased off, which allows Q 1 and Q 2 to slowly charge C 1 through the constant-current action. The power-supply current draw of the gate increases somewhat as its input voltage pulls away from the 5 V rail. When the ...
.. the circuit on a small prototype board that connects to the CG-501 stopwatch. Figure 2. You can solder in pigtails to bring power, ground, and the trigger circuit to the prototype. When the photodiode is not illuminated, capacitor C 1 ...
.. all that’s needed to linearize the 0 C to 100 C response to better than 0.1 C. So, cheaper, simpler, superior power efficiency, and more accurate. Cool! Thanks for the suggestions, guys! References Woodward, Stephen. The power ...
.. high-side current-sense amplifier, IC 1 , offers a simple method of combining low-speed clocks or other signals with dc power in cables between subsystems (Figure 1). Designed for monitoring charge and discharge current in secondary ...
Frequent contributor Nick Cornford recently published a delightfully clever design idea ( Reference 1 ) using a platinum RTD calibrated to output a 1 mV/ C signal that’s perfect for direct readout via a standard DMM I thought Nick’s ...
.. damping of the meter movement. For example, suppose that your application requires measurement of a 0 to 10 V power supply (Figure 1). You have available a typical electromechanical meter that presents a full-scale voltage ...
.. is generated. In another position, an “OFF” delay is generated. The load can be connected between Q1 and the power supply (across LED + R6), which can be switched “ON” or “OFF” after the time delay. U1 ...
.. to their coils. Because these relays require no continuous coil currents to keep their states, you can save considerable power in the driver circuit. In one type of latching relays, you can alternately energize dual coils to change the ...