This circuit is from a 1969 documentation. L1 has 50 + 50 turns 28 of wire in a 2 cm PVC or coreless cardboard tube. R1 is 510k and the batteries are 1.5V and 30V respectively.
This circuit is from a 1969 documentation. L1 has 50 + 50 turns 28 of wire in a 2 cm PVC or coreless cardboard tube. R1 is 510k and the batteries are 1.5V and 30V respectively.
