2 W amplifier LM380 (CB20053E)

This factory circuit appears elsewhere on this site. This is from a 1975 National technical documentation.

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LED Display for ASCII Code (CB13762E)
This circuit was found in a 1977 documentation. With it we have the direct indication, through LEDs...
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In the figure we have the CMOS logic test circuit developed with the 4049. The circuit activates three...
Car Headlight Reminder (CB24039E)
This headlight reminder for your car was found in the May 1970 issue of Radio Electronics...