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.
This traditional configuration with the 555 was obtained in an 80s Hands-On Electronics. The relay...
This circuit found in 1969 Popular Electronics is used to power a gas laser. The circuit produces...
National Semiconductor suggests the figure circuit for stabilizing the peak value of an...