All Electronics Hobby Projects. You can build quickly them when have free times. Most cheap and easy to find parts.
This is PIR motion sensor circuit. The movement lasted only one. the detection accuracy of Pyroelectric. As product of a Passive infrared detector PIR. [...]
This is high power music dancing light circuit, 4500 watts load using opto isolator so safe of AC line. It control light flashing by music input, use Triac driver load.…
build the Ultrasonic sensor circuit project with versatile controls. to radar systems, when we send out the waves, then detects the reflected back.
this simple electronic drum circuit project is Instrument of this era really, various sound effects and many others, using digital IC and more [...]
DC servo amplifier circuit, OCL Output 100w , use mosfet k134+j49 or Mosfet J162 + K1058, Output 112W at Speaker 8 OHM. Power Supply +56V/-56V 4A /Ch. [...]
This digital echo stereo mixer project is circuits pioneering in echo circuit before using IC-BBD to the digital system. By using digital echo circuit
This 100W amplifier circuit by transistors, but very well OCL amplifier schematic.Use transistor MJ15003,MJ15004 as main. Power supply +38V 0 -38V 3A. [...]