Found in Philips documentation from the 1970s, this circuit uses components from the era. The stability is 0.045% per centigrade degree.
This is the receiver circuit for the previous transmitter. The range of the system can reach 100...
This is one of the first solid state laser projects. It was found in the June 1972 issue of Radio...
The sensor of this circuit is a large surface diode. We believe that a small solar cell can also...