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It is also worth noting that the temperature coefficient of a 4.7 V Zener diode is close to that of the emitter-base junction of a silicon transistor at around −2 mV/°C, so in a simple regulating circuit where the 4.7 V diode sets the voltage at the base of an NPN transistor (i.e. their coefficients are acting in parallel), the emitter will ...
The following diode logic gates work in both active-high or active-low logic, however the logical function they implement is different depending on what voltage level is considered active. Switching between active-high and active-low is commonly used to achieve a more efficient logic design.
Diode–transistor logic (DTL) is a class of digital circuits that is the direct ancestor of transistor–transistor logic. It is called so because the logic gating functions AND and OR are performed by diode logic , while logical inversion (NOT) and amplification (providing signal restoration) is performed by a transistor (in contrast with ...
The resultant parallel design has the following properties. The pole of the original filter is at z = a while the pole for the parallel system is at z = a 4 which is closer to the origin. The pole movement improves the robustness of the system to the round-off noise. Hardware complexity of this architecture: N×N multiply-add operations.
Low threshold voltage diodes (e.g. germanium or Schottky diodes) may be preferable for tracking very small envelopes. The filtering for smoothing the final result is rarely perfect and some "ripple" is likely to remain on the output, particularly for low frequency inputs such from a bass instrument .
The transfer characteristic has exactly the same shape of the previous basic configuration, and the threshold values are the same as well. On the other hand, in the previous case, the output voltage was depending on the power supply, while now it is defined by the Zener diodes (which could also be replaced with a single double-anode Zener diode).
Parallel resistance is illustrated by the circulatory system. Each organ is supplied by an artery that branches off the aorta. The total resistance of this parallel arrangement is expressed by the following equation: 1/R total = 1/R a + 1/R b + ... + 1/R n. R a, R b, and R n are the resistances of the renal, hepatic, and other arteries ...
For passive type clampers with a capacitor, followed by a diode in parallel with the load, the load can significantly affect performance. The magnitude of R and C are chosen so that the time constant, τ = R C {\displaystyle \tau =RC} , is large enough to ensure that the voltage across the capacitor does not discharge significantly during the ...