DC to DC converter (CB9673E)

This converter uses an SG1524 integrated circuit, which is uncommon nowadays. The circuit is from an 80's documentation.

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Inverter Electronic Switch (CB17099E)
We found this circuit in a 1997 documentation. Its purpose is to fan an inverter for fluorescent lamp...
DC DC Converter from 12 V to 33 V (CB1231E)
We find this circuit in a 1994 technical documentation. The circuit has a 12 V input and a 33 V...
Center Tap Simulation with Diodes (CB4140E)
In the figure we show how two diodes can be used to simulate the center tap of a push-pull driver step....