Temperature to digital converter (CB21287E)

This '90s circuit found in National Semiconductor documentation uses components from the time.

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Noise limiter circuit C (CB25714E)
This circuit is suitable for use in radio receivers to improve the quality of weak signal...
32 V x 700 mA power supply with (CB8675E)
This power source was found in a Motorola manual from 1968. Transistors are from the era, and...
RIAA Preamplifier (CB919E)
This circuit should be placed between a turntable and recorder or playback media from the input to...