Electronics Projects, 50V DC DC Converter Circuit MC34063 article
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Sometimes you may get a small and simple changer on the 50th. MC34063 Input voltage can range of about 5v to 15v without any significant change output voltage. The maximum current supplied is not large, it is only a unit mA.The changer is mainly designed for easy receivers,so that the maximum current is sufficient. Otherwise, I recommend to replace capacitors on the output transistor.Scheme is the involvement of the Figure 1 and is based on the recommended involvement of the circuit MC34063, which is the foundation.It was only omitted limiting resistor, which is not needed.
MC34063 DC DC Converter Circuit