Interval for wiper (CB22113E)

This windshield wiper interval was found in an old documentation. The SCR can be the C106 and the transistor a BC548.

Two outputs DC to DC converter (CB7531E)
This circuit was obtained in Linear Technology documentation from 1993. The circuit provides 3.3 V and...
4046 Wide-Band VCO (CB25754E)
Found in the August 1994 issue of Electronics Now, this CMOS circuit uses the 4046, which is...
567 Tone Decoder (CB25787E)
We found this circuit in the December 1994 Electronics Now magazine. The worthless components are...