This circuit was suggested by Signetics in 1980s documentation. The circuit makes use of the hard-to-obtain component of our day. It is for reference only.
This interesting source, obtained in a 2001 catalog, can vary the output voltage between -16 and...
June 2017 - NXP's new 4 Mbit capacity NXH5194 memories are available from Mouser Electronics...
This circuit is from Popular Electronics of the 90's. It makes use of NO and NC sensors. The relay...