This circuit was found in February 1976, Radio Electronics magazine. The circuit is powered by 12 V and consists of an intermittently triggered timer.
1 We found this circuit in GE's 1977 semiconductor manual. The optical isolator uses an opto-SCR, and the...
This circuit was found in a 2005 Linear Technology manual. The circuit monitors 12 V batteries in...
This simple receiver was found in a book on transistors from 1954. The coil determines the...