This an old commercial receiver found in a year 1958 magazine. The circuit uses some transformer available that timer and the transistors are germanium types. The circuit is intended to receive MW stations.
The circuit shown is from the 1994 Linear Applications Handbook from National Semiconductor. The...
The integrated circuits used in this CMOS astable can be either 4011 or 4001, although 4001 is...
This circuit is from a Mallory 1968’s documentation. The integrated circuit is of the time and the...