What is a Photodiode? Light Detector Diode.

Photodiode looks similar to the common LED, but it has a feature that makes it very special. It is a device that converts light into electric current.

Operational Amplifier as Comparator (voltage comparator)

Operational Amplifier as comparator. Op-Amp can work as comparator when the differential gain in open loop is high and the speed is not a critical factor

The SBS – Silicon Bidirectional Switch is a symmetrical low power device used on trigger applications. The SBS is more versatile than the SIDAC.

It also has an additional terminal, which allows you to modify its trigger characteristics with small pulses of current.

UJT or Unijunction transistor

The UJT or Unijunction transistor is constituted by two polluted regions, with three external terminals: two bases and one emitter.

What is a 7-segment Display?

The 7-segment display, is a component used to represent numbers in many electronic devices.

Today, it is very common to find LCDs in much electronic equipment, but there are many that still use the 7-segment display for its simplicity.

What is a Darlington transistor?

The Darlington transistor is a special type of transistor with a high current gain. It consists of two internally bipolar transistors being connected in cascade

What is an  SCR?

The SCR (Silicon Controlled Rectifier) is a 4-layer semiconductor device that works as an almost ideal switch.

What is an LDR – Photoresistor?

LDR (Light Dependent Resistor) is light sensitive resistor whose resistance changes with the light intensity that falls upon it.

FET (JFET)

Field effect transistor or FET is a particularly interesting transistor and it can be of two types: the Junction Field Effect Transistor or JFET and the Metal-Oxide Semiconductor Field Effect Transistor (MOSFET).

What is an Op Amp? What is an Op Amp Open Loop?

Op Amp Open Loop Gain – Operational Amplifier Open Loop gain is given when there is no feedback path between the output and one of the two inputs

TRIAC. Power control on alternating current (AC)

Triac is a semiconductor device that belongs to the family of thyristor control devices. It is essentially two SCR connected in parallel and backwards, sharing the same gate.

What is a Zener diode?

The Zener diode is a special type of diode that allows the flow of current on the opposite direction of the arrow of the diode. This diode does not conduct until the applied voltage reaches or is greater of the breakdown voltage. Zener diode is very popular as Voltage reference element.