Negative Ion Generator (CB25366E)

We found this voltage multiplier circuit in a Radio Electronics magazine from December 1991. The high voltage transformer is an adapted flyback

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High impedance comparator (CB9594E)
This circuit can be implemented with other operational ones. We found it in documentation from the...
ADS890xB Analog to Digital SAR Converters
August 2017 - Texas Instruments is announcing the availability by Mouser Electronics of its new...
Charger Nicad (CB12119E)
This circuit was obtained in a 1979 publication, but it can be assembled with the BD135 instead of the...