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.
This circuit was found in an American 1980s documentation. Dual FETs can be replaced by single...
August 2016 - It can be obtained from Mouser Electronics the new single controller LCD S1D13L04 from...
Found in an 80's Hands On Electronics, this circuit turns on a light when it gets dark and goes...