.. 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 ...
.. is common practice to power a MOSFET with a comparator and with an unregulated voltage and to power the comparator driving it from a ... .. one (Figure 1). Many loads are insensitive to driving voltage, so it would be a waste of money and power to use a regulated supply to drive the FET. It is also common practice to add resistors R 1 and R 2 to the comparator to put hysteresis ...
.. 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 ... .. outputs a current of 0.5 mA per amp of load current flowing through its internal sense resistor while rejecting common-mode supply-voltage noise. The on-chip sense resistor handles as much as 3 A of continuous current. The IC accommodates ...
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 ...
.. than commercially available VFCs (e.g., the 4-MHz VFC110) while conveniently running on less than 10 mA from a single +5-V supply/reference. Figure 1. Take-back half (TBH) charge pump gives simple VFC reasonable performance at 20 MHz. What ...
.. damping of the meter movement. For example, suppose that your application requires measurement of a 0 to 10 V powersupply (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 powersupply (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 ...
.. or high and is loaded only by a 10 MΩ-input digital multimeter, the voltage levels are in some cases more than 100 mV from supply voltage V DD and ground Let’s call this saturation errors.” The accuracy of PWM DACs depends on ...