R1 may be 10k and R2 100k. The transistor can be the BC548 and instead of the small lamp we can use a series LED with a 1k resistor. D1 is germanium and C1 is 10 nF. C2 can be 47 nF.
Found in a 1967 General Electric SCR manual, this circuit uses a neon lamp to produce opposing SCR...
This is one of the many versions of this circuit that the reader will find on the website. This...
The circuit shown in the figure is suggested by Texas Instruments and allows data transmission on TTL devices...