5 V reference LT1027 (CB14595E)

This circuit is from the 1993 Linear Technology Applications Databook. The component is uncommon today.

Electronic Metamorphosis (CB16781E)
This circuit causes the light of a bicolor LED to change when it is turned on. The time of...
4 Channel Mixer (CB4921E)
This circuit is from an old National Semiconductor component manual. The circuit can be...
XTAL Tester (CB1517E )
This circuit tests crystals up to a few megahertz with ease. The circuit is from a 1977...