Found in a 1965 General Electric Hobby Manual, this timer was originally created to operate with photo magnifiers of the time. The circuit can be adapted for other purposes.
This high impedance input amplifier is suitable for the use with piezoelectric sources such as...
The circuit shown is based on National Semiconductor buffers and was found in the 1994 Linear...
This circuit was obtained in a1969 magazine. The magazine no longer exists, but the circuit can be...