Overview: MC34063 expansion flow step-down circuit diagram, input 8 ~ 25V, output 5V, suitable for single-chip power supply, USB power, mobile phone charging. MC34063 diffused negative voltage output circuit diagram, input 5V, output 14.5V, adjust R4, R5 can change the output voltage. MC34063 boost current-expanding circuit diagram, according to the output voltage, select the appropriate current-expanding transistor, the triode should be added with heat sink, the minimum voltage of this circuit is 4V, the output voltage is 12V, the value of R1 and R3 can be adjusted to change the output voltage. Coaxial Cable,Coax Cable,BNC Cable,CCTV Pre-made Cable,DC power splitter Chinasky Electronics Co., Ltd. , https://www.chinacctvproducts.com