LED Torch with adjustable brightness
The Led torch with adjustable brightness circuit uses LM3914 as the basis of a 10 step variable brightness current-regulated white LED . This circuit has only four components in the control…
A home to software testing, electronics circuits & projects, tips and tricks and digital diary.
A home to software testing, electronics circuits & projects, tips and tricks and digital diary.
Read MoreLED Torch with adjustable brightness
What is performance testing?
“Performance testing is defined as the technical investigation done to determine or validate the speed, scalability, and/or stability characteristics of the system under test.” Types of Performance testing Performance test…
Mains Powered LED Lights
All mains powered LED circuits work with 240 volt AC current. Mains powered LED – Single LED The power diode in the first diagram is designed to discharge the 220n…
Audio Amplifier using LM386
Audio amplifier using LM386 is a power amplifier designed to be used in low voltage consumer applications. Typical applications are like portable AM/FM amplifier, TV sound systems. It requires minimum…
White LED on 1.5 v Supply
In this post you will find circuit on how we can light up white LED on 1.5 v supply. Heart of the circuit is the transformer winded on 2.5mm by…
1 Watt Audio Amplifier
Audio AMPLIFIER 1 watt audio amplifier shown below is very simple and easy to make. You can use this in making pocket amplifier for your mp3 player. It can fit…
Flashing LED
Alternate red and green flashing LED using 9 volt battery Part list R1,R2 – 100 Ohm R3,R4 – 105 K C1,C2 – 10 μF 25 Volt T1-T2 – BC 548 D1-D5…
Performance counters and there meaning in JMeter
Common performance counters and there meaning in JMeter. Elapsed time – JMeter measures the elapsed time from just before sending the request to just after the last response has been…
Dark Sensor
Dark sensor using 2 transistor BC547 When light falls on LDR, its low resistance drives the transistor T1 into conduction. This keeps transistor T2 cut-off due to low base bias.…