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MC34063 Step Up Step Down et générateur de tension négative DC to DC converter control circuits. - YouTube
![dc dc converter - I would like to use MC34063 in step up mode, but when I change the resistor value it stopped to work - Electrical Engineering Stack Exchange dc dc converter - I would like to use MC34063 in step up mode, but when I change the resistor value it stopped to work - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/X5RAr.jpg)
dc dc converter - I would like to use MC34063 in step up mode, but when I change the resistor value it stopped to work - Electrical Engineering Stack Exchange
![28V Output From 12V DC Input Step Up DC-DC Converter Using MC34063 | Circuit Ideas I Electronic DIY Projects I Robotics 28V Output From 12V DC Input Step Up DC-DC Converter Using MC34063 | Circuit Ideas I Electronic DIY Projects I Robotics](https://www.twovolt.com/wp-content/uploads/2016/07/Step-Up-DC-DC-Converter-28V-Output-from-12V-DC-IN-Using-MC34063-3.png)
28V Output From 12V DC Input Step Up DC-DC Converter Using MC34063 | Circuit Ideas I Electronic DIY Projects I Robotics
![5V 500mA Step Down DC-DC Converter Using MC34063 | Circuit Ideas I Electronic DIY Projects I Robotics 5V 500mA Step Down DC-DC Converter Using MC34063 | Circuit Ideas I Electronic DIY Projects I Robotics](https://www.twovolt.com/wp-content/uploads/2016/07/5V-OUTPUT-STEP-DOWN-DC-DC-CONVERTER-USING-MC34063-4.png)