Clock alarm timer (CB21290E)

Found in Popular Electronics from the 90's, this circuit uses common components and can be easily implemented.

| Clique na imagem para ampliar |

witching Noise Suppressor (CB13688E)
S The purpose of this circuit, found in a 1975 publication, is to suppress the noise that occurs when...
LMH2832 Variable Gain Digital Amplifier (COM119E)
September 2016 - can be found at Mouser Electronics the new amplifiers with digital variable gain...
Output stage Darlington 2N626 (CB23753E)
This output stage with the 2N626 and 2N1019 in counterphase was found in a Radio Electronics...