Inverter Regulator -15 V with 1.5 A LM78S40 (CB14407E)

We found this circuit in the Linear Applications Hanbook of the National Semiconductor in 1994. The semiconductors used are not very common today.

| Clique na imagem para ampliar |

LC Oscillator Using the 4069 (CIR093E)
Here we show an oscillator that uses an LC network. The upper limit depends on the power-supply...
DVM to PC adapter (CB7924E)
This circuit from a Popular Electronics from the 90s allows you to use an old PC as a digital...
DC Amplifier with Drift Compensation (CB14068E)
of the National Semiconductor of 1994. The same technique can be used with other operators and the...