4-band microammeter (CB8210E)

Found in a 90s Radio Electronics this circuit requires precision resistors in the dividing network. The font must be symmetrical.

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Low Drift Sampling and Hold (CB21227E)
This circuit was found in National Semiconductor documentation from the 1990s. It applies to...
Signal generator (CB21057E)
Found in Popular Electronics, this '90s circuit generates harmonic-rich signals for testing audio...
1W Amplifier For Headphones (CB12960E)
The circuit shown in the figure is suggested by ON Semiconductor (www.onsemi.com), based on its...