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Schottky Diode (Schottky Barrier Diode)

Dec 272022
 
Schottky Diode (Schottky Barrier Diode)

Schottky Diode.

These diodes are characterized by their switching speed and low voltage drop when they are forward biased. (typically 0.25 to 0.4 volts)

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 Semiconductors No Responses »

Ideal Transformer Working Principle

Dec 202022
 
Ideal Transformer Working Principle

Ideal Transformer

The ideal transformer is an electromagnetic device that allows to increase or decrease the alternating voltage and current while maintaining constant the power

 Alternating Current (AC) No Responses »

Current Limiter circuit for Power Supply using transistor & resistor

Dec 072022
 
Current Limiter circuit for Power Supply using transistor & resistor

Current Limiter circuit for a Power Supply using a transistor and a resistor.

If the load current exceeds its maximum, an over current protection is needed

 Circuit diagrams, Tutorials Tagged with: power supply, voltage regulator, zener No Responses »

DC Motor Speed Control with 4049

Oct 102022
 
DC Motor Speed Control with 4049

DC motor speed control with 4049 (PWM)

This DC motor speed control with 4049, is a circuit that allows varying the speed of small DC motors of 3 or 6 Volts that are often found in toys or small electronic devices.

 Circuit diagrams No Responses »

Car Battery Monitor Circuit using 4 LEDs

Oct 052022
 
Car Battery Monitor Circuit using 4 LEDs

Car battery monitor circuit using 4 LEDs

This simple Car battery monitor, allow us to know the voltage of the battery at all times. To achieve this 4 leds are placed somewhere on the dash of the car. Each LED has a label indicating the battery voltage at that time.

 LED Circuits, Operational Amplifier Circuits Tagged with: automotive, battery, lm324 No Responses »

kWh – Cost of Electric Energy

Sep 172022
 
kWh – Cost of Electric Energy

The unit of measurement used in the electricity bill is the kWh, however in the electrical or electronic products that we buy in stores, the unit of electricity consumption is given in watts or kilowatts.

 Alternating Current (AC) No Responses »

Power Factor Definition (PF) – Power Factor Formulas

Sep 152022
 
Power Factor Definition (PF) - Power Factor Formulas

Power Factor Definition

Power factor is the ratio between the energy that is converted into work and the electrical energy consumed in a circuit or device

 Alternating Current (AC) No Responses »

UJT – Unijunction Transistor – Equivalent model & circuit

Aug 082022
 
UJT - Unijunction Transistor - Equivalent model & circuit

UJT or Unijunction transistor

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

 Semiconductors No Responses »

What is a Phototransistor? – Phototransistor Equivalent Circuit

Jun 022022
 
What is a Phototransistor? - Phototransistor Equivalent Circuit

A phototransistor is essentially the same as a common transistor, but it can work in two different ways:

– As a common transistor, using the base current (IB)
– As a phototransistor, using the light that illuminates this element and that acts as the base current. (IP).

 Semiconductors No Responses »

DC motor speed controller circuit using 555

May 192022
 
DC motor speed controller circuit using 555

DC motor speed controller circuit using 555

This simple DC motor speed controller circuit, works with 12 volts and controls a DC motor using the 555 integrated circuit.

 555 Timer Circuits Tagged with: dc motor No Responses »

400 watts Stereo Amplifier Circuit using STK4050

May 142022
 
400 watts Stereo Amplifier Circuit using STK4050

400 watts Stereo Amplifier Circuit using STK4050

This 400 watts stereo amplifier circuit uses the Sanyo STK4050 hybrid IC, a high quality low noise amplifier. Its maximum output power is 200W per channel

 Circuit diagrams No Responses »

Fridge Door Alarm Circuit

May 072022
 
Fridge Door Alarm Circuit

Refrigerator door alarm circuit with two 555 timers

This refrigerator door alarm circuit alerts you when the door has been left open. Very important, because the power consumption increases when this happends. It uses the popular 555 timer IC

 555 Timer Circuits, Alarm Circuits Tagged with: ldr 2 Responses »
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