Have you ever used the NE555 timers? I have used it since 36 years ago. Now, still use it. It's not out of date. We don't waste time with questions.…
Learn about many electronic components with their pinout details, uses, the example circuits, and how to use them.
This is all simple LM741 circuits, it's so useful, LM741's general purpose single OP-AMP. UA741's high performance monolithic OP-AMP on single silicon chip.
When we build variable DC power supply,output 1A and adjust up to about 30V. Most use LM317, because high-efficiency, easy to apply and cheaper[...]