MC34063 Boost with external NPN transistor help

takao21203 said:

You could try using the chip output to short the base current for the external transistor, supplied by a resistor from Vcc.

If I use transistors correctly, or install them into my tester, the C/E voltage is close to 0V, not 0.7V, that is a wrong value.

Also simulation software might be of use to you, LTSpice etc.
To test various way of driving transistors at this voltage (3V).

So what I suggest is actually called "external saturated switch" in the manual. Maybe also can be used for NPN.

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