This interesting circuit for SMD assembly appeared in the November 1987 issue of Radio Electronics magazine. The phonons are generated by selected resistors that are fitted to the assembly.
This circuit is suitable for applications such as a TTL log digital link. Maximum frequency is...
We found this simple wired intercom circuit with transistors in a 1988 publication. In addition to not...
Other operational amplifiers can be used on this unit gain amplifier. The circuit is from the 1993...