.. in Figure 2 does not account for this input leakage and appears to switch at 310 V. Materials on the topic Datasheet Diodes TL431 Datasheet Vishay BS170 Datasheet Infineon IGB03N120H2
.. pressed, the whole circuit is in sleep mode, drawing zero current. Closing SW1 allows Q2 to conduct with the aid of IC1, a TL431 programmable zener, which in turn powers IC2 and MOSFET Q3. Figure 2. Controllable LED boost converter. At this ...
Requiring only a handful of inexpensive components, the circuit breaker in Figure 1 responds to both overcurrent- and overvoltage-fault conditions. At the heart of the circuit, D 2 , an adjustable, precision, shunt-voltage regulator, provides a ...
Most isolated, offline SMPSs (switched-mode power supplies), including flyback, forward, and resonant, must operate at input voltages of 90 to 260 V rms. Some cases even use line-to-line voltages of 400 V rms 10%, leading to increased ...
.. components are not particularly critical. The 2N4401 can be just about any NPN general purpose small-signal transistor. The TL431 is a shunt voltage regulator but it is being used as an audio amplifier in this circuit. In fact, the whole ...
.. charged to a particular potential. I was convinced that there must be a way that a programmable zener diode, such as the TL431 , could be used but I found no simple circuits. My first thought was just to connect a series current limiting ...
.. circuit is 1.25 V. The operation of the circuit revolves around the TLV431 shunt regulator. This IC is based on the popular TL431 shunt regulator. The difference is that the TLV431's internal reference is 1.25 V, as opposed to 2.5 V for ...
The article describes an RGB incident light sensor that uses colored LEDs as narrow-spectrum photosensitive elements. In the process of prototyping the RGB sensor, LEDs from the available batches were tested. However, the best results are obtained ...