Sensitive Crowbar (CB5887E)

This circuit is from an 80's documentation, firing when the input voltage exceeds 5 V. The SCR can be the TIC106 need not have a heatsink.

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Light Linear Meter (CB5304S)
This sensor circuit was found in an American 1980s documentation. Modern operational amplifiers can...
Active Tone Control (CB794E)
This treble and bass control drains some milliamperes from a 12 V supply and can be used with any...
TPS7A19 Linear Regulator with Low Voltage Drop (COM189E)
January 2017 - Texas Instruments' new TPS7A19 Low Voltage Dropout (LDO) linear regulators are now...