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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Sampling and Holding with the LM308 (CB4489E)
This circuit utilizes a precision operational amplifier that can be replaced with an equivalent. The...
Timer 4093 (CB1558E )
When we connect the power supply of the circuit shown in the figure the capacitor is discharged and thus...
Portable Calibrator (CB6018E)
This circuit has a thermal chamber that acts as a stabilizer, compensating for the ambient...