This circuit has a gain of 6 dB for low frequencies from 85 Hz and can be used in a mini subwoofer. The circuit is from a Radio Electronics from March 1990.
This circuit can be used with receivers to attenuate signals that may cause interference. The...
This circuit is from a Linear datasheet. The circuit provides a 5 m voltage with 40 mA from an AA...
Found in a Popular Electronics from the 90s, this game can be seen in other configurations on this site. The...