Electrolytic Capacitor
Electrolytic capacitors have been developed to achieve large capacities in small physical dimensions. To achieve this large capacity, a special dielectric is used.
NAND gate – Truth table.
NAND gate, also called universal gate, is a gate that produces a logic “0” output only when all logic inputs are “1”. Truth table.
Automatic night light using 555 and relay
This Automatic night light using 555 IC turns lights on when there is no daylight. The circuit is perfect for lighting single places such as the garden, the front door of the house, the entrance to the garage, etc.
Mesh Current Method in a Resistor Network
The Mesh current method is very useful to know all the current in a network of only resistors. This method, a little more extended, is also applied to circuits where there are resistances and reactance.
TDA2822M 2 watt audio amplifier circuit
This 2 watt audio amplifier circuit is specially designed to consume little power and to be used with batteries or low voltage power sources.
What is a Millman’s Theorem?
Millman’s theorem is used to directly obtain the voltage between the ends of a parallel branch circuit. Equivalent Millman circuit Formulas, example.
Window comparator using op amps
A window comparator using operational amplifiers lets you know if a signal (voltage level) is within or outside a previously defined acceptable voltage limit. Using a comparator or operational amplifier that controls the upper voltage level and another comparator that controls the lower voltage level, a window comparator can be implemented.
Electronic sound control circuit (applause)
This electronic sound control circuit works like a sound activated relay and can activate or deactivate a device connected to it, by two consecutive claps.
Push – Pull Amplifier
A Push – Pull amplifier is called that way, because it uses 2 groups of transistors and only one works at a time. One group pushes in one direction while the other pulls in another direction. Each group is responsible for amplifying a single phase of the input wave.
What is a PUT?
PUT – Programmable Unijunction Transistor. Main characteristics. PUT and UJT. Oscillator circuit design and waveforms. Frequency formula
Twilight switch circuit with Op. Amp.and LDR
This Twilight switch circuit activates a light, a lamp, a motor, etc., at the time of sunset and performs the reverse process at dawn.
This is an ideal circuit for activating a security light that must be on all night.
