Electronics Area – Electrical and Electronics Tutorials and Circuits
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Electrical and Electronics Tutorials and Circuits
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Light Operated Relay Circuit using LDR / Photoresistor
The LDR varies its value (ohms) depending on the amount of light that illuminates it. The more light less resistance and less light more resistance, A potentiometer is used to control the light level that activate the relay
Hexadecimal Numbering System
The hexadecimal numbering system (base-16). This numbering system is mainly used to simplify the representation of binary numbers and for the digital handling of colors.
LM350 Adjustable Voltage Regulator (Variable Power Supply)
This variable power supply uses the LM350 adjustable voltage regulator and can deliver 1.25 to 16 volts and a maximum current of 3 amps.
Universal Electric Motor – Constitution, Operation, Speed
Universal Electric Motor – Constitution, Operation, Speed
The universal electric motor is so named because it is the only motor that can be connected to both alternating current and direct current.
9VDC Power Supply using Zener and Transistor
This Power source can be used to power circuits or electronic devices that would normally use a 9 volt battery, saving us the cost of the battery while being used at home.
Astable multivibrator using NAND gates
This astable multivibrator uses two NAND gates of the 4 available on the 7400 TTL integrated circuit. Two LEDs are used to view the status or logic output of each gate.
DIAC – Diode for Alternating Current. V-I characteristic
DIAC (Diode for Alternating Current)
DIAC is a bidirectional trigger diode, designed to trigger TRIAC and thyristors. DIAC is a voltage-triggered device
Transformerless Power Supply circuit
This circuit is designed to be connected to a specific circuit because it can give a maximum and minimum possible electric current
Car Battery Booster circuit (Battery Booster Circuit)
Car Battery Booster Circuit
This Car Battery Booster Circuit, is very useful when the car battery has low charge or does not deliver the expected current to operate the starter motor.
Transistorized Voltage Regulator (Zener & Transistor)
Explanation of a transistorized voltage regulator. Zener diode and transistor voltage regulator circuit diagram
Multitone generator circuit – Open door indicator using CD4001
Multitone generator circuit / Open door indicator using CD4001
This very simple multitone generator circuit has many applications but here it is shown as door indicators, generating a different tone for each door of our house
Dielectric constant / Relative Permittivity (Capacitor)
What is the Dielectric constant / Relative Permittivity? The dielectric constant is the ratio of the permittivity of a substance to the permittivity of free space. It is a dimensionless physical constant