throbscottle
Well-Known Member
I bought 10x MC34063 for £1 to experiment with, built a little board for one since since they are soic packaged (hence the cheap cost) to use it as a boost converter with 5v in, 28v out, running about 100KHz. Worked lovely with only my dmm connected, but as soon as a light load (1.5k) was connected it dropped down to little over 10v. What's going on? Anyone know?
Best guesses so far, it's flakey because of the amount of boost used for the stage and is getting unstable, or I'm dinging a bad t-on / t-off ratio.
TIA
Edit. "flakey". Tsk, darn, I meant unstable, didn't I... Long day, need sleep zzzzzzz
Best guesses so far, it's flakey because of the amount of boost used for the stage and is getting unstable, or I'm dinging a bad t-on / t-off ratio.
TIA
Edit. "flakey". Tsk, darn, I meant unstable, didn't I... Long day, need sleep zzzzzzz