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Increase Output Voltage on 78XX Regulators

Increase Output Voltage on 78XX Regulators

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  •  December 30, 2020
  •  Increase Output Voltage on 78XX Regulators
  •  Posted by Marcel at 2:21 pm
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How to increase output Voltage on 78XX Regulators?

Using a zener diode to boost the output voltage on a 7805, 7809, 7812, 7815, ….regulators.

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DIAC - Diode for Alternating Current. V-I characteristic

DIAC – Diode for Alternating Current. V-I characteristic

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  •  September 24, 2020
  •  DIAC – Diode for Alternating Current. V-I characteristic
  •  Posted by Marcel at 6:07 pm
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DIAC (Diode for Alternating Current)

DIAC is a bidirectional trigger diode, designed to trigger TRIAC and thyristors. DIAC is a voltage-triggered device

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PUT - Programmable Unijunction Transistor

PUT – Programmable Unijunction Transistor

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  •  March 12, 2020
  •  PUT – Programmable Unijunction Transistor
  •  Posted by Marcel at 12:51 pm
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What is a PUT?

PUT – Programmable Unijunction Transistor. Main characteristics. PUT and UJT. Oscillator circuit design and waveforms. Frequency formula

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Non-inverting Operational Amplifier

Non-inverting Operational Amplifier

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  •  February 3, 2020
  •  Non-inverting Operational Amplifier
  •  Posted by Marcel at 5:08 pm
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Non-inverting Operational Amplifier (opamp).

How to find the voltage gain (formula). How to find the Input impedance (Zi) and output impedance (Zo) of a non-inverting operational amplifier.

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Photodiode - Light Detector Diode

Photodiode – Light Detector Diode

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  •  January 16, 2020
  •  Photodiode – Light Detector Diode
  •  Posted by Marcel at 10:12 am
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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.

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Operational Amplifier as Comparator

Operational Amplifier as Comparator

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  •  January 13, 2020
  •  Operational Amplifier as Comparator
  •  Posted by Marcel at 3:23 pm
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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

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SBS – Silicon Bidirectional Switch

SBS – Silicon Bidirectional Switch

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  •  January 3, 2020
  •  SBS – Silicon Bidirectional Switch
  •  Posted by Marcel at 10:16 am
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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.

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Unijunction transistor - UJT (equivalent model & circuit)

Unijunction transistor – UJT (equivalent model & circuit)

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  •  December 19, 2019
  •  Unijunction transistor – UJT (equivalent model & circuit)
  •  Posted by Marcel at 9:37 am
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UJT or Unijunction transistor

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

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7-segment Display

7-segment Display

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  •  December 14, 2019
  •  7-segment Display
  •  Posted by Marcel at 11:30 am
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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.

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Darlington transistor

Darlington transistor

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  •  December 13, 2019
  •  Darlington transistor
  •  Posted by Marcel at 4:22 pm
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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

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SCR (Silicon Controled Rectifier) - Thyristor

SCR (Silicon Controled Rectifier) – Thyristor

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  •  December 12, 2019
  •  SCR (Silicon Controled Rectifier) – Thyristor
  •  Posted by Marcel at 10:20 am
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What is an  SCR?

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

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LDR - Photoresistor

LDR – Photoresistor

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  •  November 8, 2019
  •  LDR – Photoresistor
  •  Posted by Marcel at 9:36 am
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What is an LDR – Photoresistor?

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

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