2025
Aug
12

Buchholz Relay Circuit For Transformer Protection

Buchholz Relay Operation

Buchholz Relay Circuit is used for Transformer Protection, as we know there are many defects and dangers during the operation of power transformer that need to be addressed and necessary measures to be taken. Some of the hazards to transformer protection include overheating, over

2025
Aug
1

DHT11 DHT22 Temperature and Humidity Sensor

DHT11 DHT22 Temperature and Humidity Sensor

DHT11 & DHT22 temperature & humidity sensor are well known models which are used for monitoring the humidity and temperature of a vicinity or place. DHT11 and DHT22 models are used in thermostats and hygro thermometers which are used for different purposes

2025
May
21

Variable Frequency Drive VFD Motors Principle & Equation

What is a VFD? As the name describes VFD or Variable Frequency Drive is motor controller that drives an electric motor by applying the varying frequency and voltage to the electric motor that are used in the case where we need to

2025
Jan
21

Resistor Color Code Chart & Resistor Calculator

resistor-color-codes

If you want to understand resistor color coding then you are at right place where you are explained full resistor calculator depending upon the resistor colour bands which are always confusing for the electricians. There are 4, 5 and 6 bands on

2024
Oct
21

Construction Usage & Operating Principle of Light Dependent Resistors LDR’s

light-dependent-resistor-ldr

LDR or Light Dependent Resistor which is also known as photo resistor is a device whose resistivity is a function of the incident electromagnetic radiation. SO we can say that these are light sensitive devices. Other terms which are used for LDR

2024
Sep
25

Bipolar Junction Transistor | pnp bjt hbt jfet npn Transistor

Bipolar junction transistor bjt schematic diagram

What is a Transistor The transistor is a three-layer semiconductor device that consists of: two n-type layers and one p-type layer of material which is called npn transistor two p-type layers and one n- type layer of material which is called an

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