How to test a diode without meter
This Diode tester circuit can check the diode the good or bad and also can indicate its polarity. using op-amp 741IC and LED for display. […]
IC-741
Power Supply Splitter circuit using op-amp
If you need a dual power supply. But you only have a single supply source. So should build this power supply splitter circuit.
Universal Preamplifiers using – NE5532 – LM382 – 741
You have a good power amplifier and speaker. You are listening to music. But the sound is very light. The problem has many reasons. One reason for the problem is the input signal is too low. You may need a preamplifier using IC. It will make the input signal is higher. Then, You will listen … Read more
Treble Booster circuit using IC-741
t is Treble Booster circuit help give the sound of music that you listens to bright go up. it is cheap, easy to build because a few pats with IC-741.
Active Bass Booster circuit using IC-741
This is a general-purpose bass booster circuit. Why should you use this? You are listening to your favorite song. But it lacks many flavors. Friends said No Bass! Buy a new one amplifier right now. Stop… It is true. Your amplifier may less bass. But before buying a new amplifier. Try this, it probably better.