Dual LED Flasher circuit using PNP transistors
This is many LED flasher circuit and with PCB layout using transistors astable multi vibrator as low frequency oscillator below more...[...]
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December 20, 2018
Are you looking for a mini project? You want to build the circuit diagram with the PCB layout. My site may be the one choice for you. We have a collection of the mini project more than 200 projects.
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If some project does not work. I am sorry to hear that. But you will learn the solution. It is not a failure. But it is another way of learning.
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LM317, 3A adjustable voltage regulator circuit diagram
Output: 1.2V to 20V, and 3V,6V,9V,12V
3A adjustable voltage regulator using LM317-2N3055
High quality, 3A adjustable voltage regulator. Using LM317 and 2N3055 so easy and cheap. Adjust voltage in steps 3V, 6V, 9V, 12V. And In fine, 1.25V to 20V.
December 11, 2018
Non-contact AC voltage detector circuit using CD4060
This non-contact ac voltage detector circuit, using digital IC CD4060 as main components and resistor and LED display only. it is use 9V battery as power supply.
December 6, 2018
Sawtooth wave generator circuit using UJT
Sawtooth wave generator circuit using UJT
This is Sawtooth wave generator circuit using UJT transistors is easy. to connects with VR1(potentiometer), VR2 and C1. adjust frequency and waveform out
December 1, 2018
The Op-amp IC tester circuit
The Op-amp IC tester circuit
This is an simple op-amp IC tester circuit that cheap and easy to build. for test many op-amp ICs fast check. for LM741, LM324, LM339, LM358, LM311 and more [...]
November 28, 2018
2 Crystal tester circuits with PCB
This is Crystal tester circuit using NPN transistors as main. LED1 is light up when a crystal is good and simple oscillator circuit works.
November 23, 2018
Build 20W Integrated Amplifier with tone control
This is small integrated amplifier at 20W using a TDA2004 or TDA2005 IC,use 12V supply for BCL car audio amps[...]
November 20, 2018