This circuit was found in a 1967 General Electric manual. It is intended for the control of high voltage Nixie pipes used at the time. SCRs may be equivalent.
In the figure we have the way to obtain a monostable TTL based on 74121. The circuit appears in...
A stereo digital mixer using the 4053 is built as shown in figure bellow. The IC must be powered...
I got this circuit from a 1977 English magazine. It can still be easily assembled, as the...