Astable multivibrator lights LED from a single cell
#astable multivibrator
#LED
#single cell
#flashing
#transistor
#timing circuit
#pulse generator
#electronics
#DIY
#educational
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Simple Metronome using transistor
This circuit is a simple metronome model designed for ease of use. It employs transistors as key components, specifically configured as an astable multivibrator, to produce a beeping sound. The tone can be adjusted using a variable resistor (VR1). A...
LED Christmas Lights Circuit
Have you already set up a Christmas tree in your house and decorated it with traditional lights? Build a couple of these LED lights to enhance the Christmas atmosphere.
The project involves creating LED lights that can be used to decorate...
led flashing circuit
Its state is constantly changing, and this change affects the flow of current and voltage, which is visible with the two LEDs. The speed of the LED flasher can be adjusted with potentiometer P1. As an astable multivibrator, the circuit...
temperature alarm circuit
Transistors are configured as a Darlington pair in this circuit. A thermistor is utilized to detect or sense heat. A 12K variable resistor is employed to adjust the activation of the buzzer at the desired temperature. The operation of the...
80 milliwatt Improved 3 Transistor Audio Amp
This circuit is similar to the previous one but utilizes positive feedback to increase the amplitude to the speaker. It was adapted from a small 5-transistor radio that employs a 25-ohm speaker. In the prior circuit, the load resistor for...
basic transistor circuits for beginners explored
This article compiles small transistor circuits and configurations suitable for beginners, including current amplifiers, limiters, oscillators, and latches. A simple current amplifier circuit can be constructed using just a couple of NPN transistors. Additionally, two transistors and resistors can be...
Economical Desk Lamp For Camping
This LED lamp was originally designed for use in a budget solar-charged 12V electrical system. It provides sufficient brightness for comfortable reading at night.
The LED lamp operates on a 12V power supply, making it suitable for integration into solar-powered systems...
Transistors UHF tuner circuit
The circuit features an adjustable prestage utilizing the AF279 transistor, while the natural oscillation mixer stage employs the AF280 transistor. The power circuit is mounted on a board with copper coating. The main coil specifications are as follows: L1, L3,...
How to Make a Simple Reverse Forward LED Light Chaser Circuit Using IC 4017
An LED light chaser circuit is an electronic configuration designed to illuminate a group of LEDs in a predetermined sequence. A commonly used integrated circuit (IC) for creating this type of LED sequencer circuit is the 4017. This IC functions...