My wife would like to control an Air pump (looked like this projects), to works only daylight hours. To save electricity and help extend the use of the air pump. I so select a light switch controller Because there are less devices and easily build. Which is circuit diagram below: Figure 1 the daylight sensor […]
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Use an output pulse from a digital circuit to controls transistor ON and drive the relay as switch ON-OFF to any circuits or external devices. The Controlling electronic circuits, Electrical devices in homes or factories. We often use the relay It is a first, though very ancient, relay still have many uses. A general Relay […]
Woodworking is an activity that I enjoy very much. The secondary from the electronics. But I did not study directly. So View from youtube mainly. Wood cutting is very important. If it does not cut straight or 90 degrees. When assembly is a piece of work, a lot of problems. Cutting by hand, though, to […]
Today I login my affiliate-program.amazon.com see some order good for everyone. “Rechargeable 12V 7AH Sealed Battery” List Price: $54.90 Now Price: $9.81 You Save: $45.09 (82%) It very cheap battery for make many projects. Normally battery life for 2-3 years. It is a pity, I do not live in the USA. Hoped that This story […]
The past, we’ve used only a digital logic circuit by IC. But, in truth. We do not need any Ics, may use Switch or Diode or transistors connected as a logic circuit. Try to see Figure 1 which use switch and diode connected as AND and OR gate , To make us understand the meaning […]