.. subcircuit that uses degeneration of a PNP transistor to achieve zero temperature coefficient (tempco or TC). This low-cost design is the result of collecting data on many semiconductor devices over a 15+ year period and frequent reviews of ...
.. noise annoys. Occasionally, it can be a valuable tool. Surprisingly, there is a whole palette of noise colors [ 1 ]. This design idea (DI) shows good ways of generating the commonest and most useful ones, which are white [ 2 ] and pink [ ...
.. capacitance at its output. For this white noise generator circuit, some output capacitance that leads to peaking can be a design feature rather than a hazard. The output sees 10 kΩ R S and a 50 nF C X to ground. This capacitor C X ...
.. Yellow and white LEDs have been successfully tested. Don't forget to shade the optocoupler in bright light. Figure 4. Design of a homemade optocoupler. The filter capacitor C3 can be omitted when working with frequencies above 1 kHz; ...
.. circuits can be characterized by sweeping the input signal across a range of frequencies and observing the response of the design. Input sweeps can be composed of discrete input frequencies or a swept sine. Extremely low frequency sine ...
.. into via standard RS-232 output signals (e.g., RTS and TxD) and used to power attached analog and digital circuitry. This design idea (DI) does exactly that by using asynchronous RS-232 to power and count pulses from a simple 10-kHz ...
.. voltage (V OC ), as long as they do not consume an appreciable amount of current relative to the module I SC . In this design, current through R1 and R2 contributes an error of 19 µA, or 0.0038% of I SC . Figure 4. PV capacitive ...
.. parts count) than the King’s? It’s partly the self-compensating TBH diode charge pump described in an earlier Design Idea: “Take-back-half precision diode charge pump” ( Reference 2 ). It also gets help from AC ...
.. ppm, or 23 bits. The precision of the AD586L 5 V reference, which is 500 ppm untrimmed, limits absolute accuracy. If your design requires greater accuracy, then you can use an Analog Devices simple trim circuit to further tweak it. ...
.. rather than a toggle/rocker/slide thingy, which may be cheap and reliable, but would look so last millennium. This design idea (DI) shows how to transform a basic momentary push or tact(ile) switch into a latching bi-stable device. ...