How do NPN transistors work?
The standard bipolar or BJT transistor is presented in two basic forms. An NPN type (Negative-Positive-Negative) and a PNP type (Positive-Negative-Positive). The most commonly used transistor configuration is the NPN…
Category: Component
This area cover guidance about electrical component and electronic devices. it also cover use of component in circuits design with benefit and losses of miss-configuration of its value. its also cover active and passive component and its example with projects.
How can you tell if a transistor is NPN or PNP?
Using the method for publication of NPN from PNP. If you have a transistor but you do not know if it is NPN or PNP, then you can find out…
What is the dark current of a photodiode?
When the photo transistor is placed in the dark and a voltage is applied from the collector to the transmitter, a certain amount of current flows. This current is called…
How does a photo diode work?
Let’s talk about Photodiode operation in circuits. The operating principle of a photodiode is when a large-energy photon strikes the diode, creating a pair of electrons. This mechanism is also…
What is a photo diode?
A photodiode is a type of light detector used to convert light into current or voltage depending on how the device works. Contains optical filters, integrated lenses and surfaces. These…
What is the voltage follower?
A voltage follower (also called unit gain amplifier, buffer amplifier and isolation amplifier) is an op-amp circuit that has a voltage gain of 1. This means that the operational amplifier…
What is the lm386?
If you build a microcontroller sound sensor, you can install it on an LM386 based amplifier. It’s cheap, easily available and does not require too many external parts. A nice…
What is the function of lm339?
A dedicated voltage comparator will generally be faster than an operational amplifier for general use put into operation as a comparator. A dedicated voltage comparator can also contain additional functions…
What is an op amp and how does it work?
Well, the idea is to insert two electrical signals into the inputs, so the output changes accordingly. This takes the difference between the inputs and amplifications, then the operational amplifier…
What is the use of IC lm358?
The LM358 is a dual-core, dual-core, low-power operational amplifier, originally initiated by National Semiconductor. It is used in detection circuits. The LM358 abbreviation indicates an 8-pin integrated circuit that includes…
How does IR sensors work?
An infrared sensor is an electronic tool that is used to detect certain environmental characteristics by emitting and / or detecting infrared radiation. Infrared sensors can also measure the heat…
What is the function of laser diode?
A laser diode (LD), an injection laser diode (ILD) or a laser diode is a semiconductor device similar to a light emitting diode which is created at the junction of…
What is an IR photodiode?
An IR sensor is basically a device composed of a pair of IR LEDs and a photodiode collectively called optocouplers or optocouplers. The IR LED emits IR radiation, the reception…