As shown in Figure 4, the current limiting circuit consists of a power transistor Q1 (TIP31C). The LED array A is connected to the collector of Q1. Q1 is biased using resistor R1. In the emitter ...

Another circuit for hot-swap applications (Figure 2) uses a pnp transistor (Q1) and current-sense resistor (R1) to provide continuous current sensing and limiting. As power is applied, current flows ...

His fabricated simulation circuit worked perfectly. ... I think tekkieneet is suggesting to use the zener diode as a shunt regulator, with a resistor in series to limit the current through the diode.

Series-resistor current limiting ... the motor-drive supply voltage is 5 V. Ohm’s Law is used to calculate total circuit resistance at 2.5 Ω to limit current through the winding to its 2-A ...

For this purpose, DL7 is powered using an active current-limit circuit. It consists of two PNP transistors—Q1 (BC556) and Q2 (TIP32)—and current-sensing resistor R7. Q2 is mounted on a ...

This current-limiter circuit design idea is based on a feedback-controlled current, where current across a MOSFET rises with an increase of the actual voltage across the capacitor bank V cap (Fig. 1).

Constant current limiting circuits are commonplace, but sometimes a constant power limiting function is desired instead. This can be because downstream loads, like DC/DC converters, present a constant ...

These old 1N5305 current limiting diode regulators are simply constructed from a JFET with an internal feedback resistor to its ... constructs a current limiting circuit using a JFET and ...