What is Impedance?
Impedance (Z) shows the opposition to the flow of direct or alternating current. Impedance is the vectorial addition of resistance (R) and reactance (X).
What is the Impedance of an Inductor?
The impedance of an inductor (also called inductance) is the measure of the opposition to a change of electrical current in this component.
OR and AND logic gates made with diodes
Diode Logic OR gate (wired OR connection) and Diode Logic AND gate (wired AND connection). Diode Logic uses the fact that diodes conduct only in one direction. (they behave like switches)
Clock signal generator using 7400 IC (PCB)
This clock signal generator is an astable circuit which uses the TTL 7400 integrated circuit. The 7400 IC has four 2 inputs NAND gates (NOT AND) but we only use two gates. Suggested Printed Circuit Board (PCB)
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
UJT Relaxation oscillator circuit
The UJT relaxation oscillator circuit is a non linear oscillator used to generate a nonsinusoidal repetitive output signals that can trigger power control devices such as SCRs and TRIACs.
What is Joule’s Law?
It is known as Joule effect to the phenomenon by which if in a wire circulates an electrical current, part of the energy is transformed into heat. This law (Joule’s Law) is named after the British physicist James Prescott Joule.
Why is there a diode connected in parallel to a relay coil?
The purpose of a diode connected in parallel to a relay coil (flywheel diode or freewheeling diode) is to avoid damaging some nearby components sensitive to high voltage.
BCD Code: Binary Coded Decimal
In order to share information in digital format, it is common to use a binary or hexadecimal representations (BCD Code). There are other methods to represent this information and one of them is the BCD code.
12v to 24v converter
This 12VDC to 24VDC step up converter is very useful to power devices that run on 24 VDC when we have a 12VDC voltage source as it could be a car battery or alike.
What is an Inductor – Coil?. Inductance – Inductance Units
Inductor stores energy in form of magnetic field due to the self-induction phenomenon. A cable where a current circulates, has on its surroundings a magnetic field.
