schmidtbag
- Nov 8, 2012
- 36
- Joined
- Nov 8, 2012
- Messages
- 36
2M+ ohm resistors not resisting *SOLVED*
Just as a FYI, I'm not that great with electronics so if it seems like the answer is too obvious, its probably right.
Anyways, I recently bought this DC voltage converter to convert 12V 20A to hopefully around 24V 4A. Unfortunately, I somehow missed the fact that it said stepped up to 35V-60V. The product works but the 2M ohm pot on it just isn't high enough. So, I removed it to place my own resistor in place (I don't need the pot, I just want a 24V output). I have some 4.7M ohm resistors (I believe they're 1/4W, although they could be 1/8W too) which I'm not sure would get me to 24V but would obviously get me closer.
But, for some reason, the resistors don't seem to do anything at all. The power goes straight through them, and the power source puts on its overload protector. I tried 10M resistors too (which I think are also 1/4W) which also failed. I tried putting both kinds of resistors in parallel and serial, which didn't change anything.
What I find interesting is if I try a 10 ohm, 1W resistor, everything works fine aside from the fact that I'm basically still well above 50V. I don't have any higher 1W resistors on me right now. So I'm just wondering, why don't the 4.7M and 10M resistors work, even in parallel? Is there a way I can use them? And if not, what would you recommend to get me to 24V?
Just as a FYI, I'm not that great with electronics so if it seems like the answer is too obvious, its probably right.
Anyways, I recently bought this DC voltage converter to convert 12V 20A to hopefully around 24V 4A. Unfortunately, I somehow missed the fact that it said stepped up to 35V-60V. The product works but the 2M ohm pot on it just isn't high enough. So, I removed it to place my own resistor in place (I don't need the pot, I just want a 24V output). I have some 4.7M ohm resistors (I believe they're 1/4W, although they could be 1/8W too) which I'm not sure would get me to 24V but would obviously get me closer.
But, for some reason, the resistors don't seem to do anything at all. The power goes straight through them, and the power source puts on its overload protector. I tried 10M resistors too (which I think are also 1/4W) which also failed. I tried putting both kinds of resistors in parallel and serial, which didn't change anything.
What I find interesting is if I try a 10 ohm, 1W resistor, everything works fine aside from the fact that I'm basically still well above 50V. I don't have any higher 1W resistors on me right now. So I'm just wondering, why don't the 4.7M and 10M resistors work, even in parallel? Is there a way I can use them? And if not, what would you recommend to get me to 24V?
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