This is a circuit from a 1977 documentation. R1 is 39k, R2 15k, R3 3k9 and C1 uF. The tube is the critical component of the project.
This is a circuit from a 1977 documentation. R1 is 39k, R2 15k, R3 3k9 and C1 uF. The tube is the critical component of the project.
