This monostable circuit, from a 1977 Radio Shack documentation, uses a 7400. The time is given by the capacitor and the power must be supplied with 5 V.
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...