I've created a small full-wave bridge rectifier for 12VAC. Even open circuit, when it's powered it gets quite hot quite quickly. I'm sure it's a case of not having the diodes correctly connected, but I can't seem to spot it no matter how much I compare it to other circuits, and I need a second pair of eyes to point out what I'm missing.
I've linked the schematic below. The rectifier is used to power a relay coil. The relay is an ORWH-SH-112D1F. The coil's only 360mW, equating to about 0.03A (at 12V). I don't think this should be enough current draw to cause the rectifier to get that hot. The diodes I chose are 1N4001. Potentially could have done with 1N4007 instead, but I didn't even measure a noticeable difference in voltage drop across the two different diodes (the voltage drop being about 0.5V), and the 4001 are still rated abover 12V. The cap is 25V, 1000uF.
I've gotta be missing something obvious, but I just can't see it. Any ideas?
I've linked the schematic below. The rectifier is used to power a relay coil. The relay is an ORWH-SH-112D1F. The coil's only 360mW, equating to about 0.03A (at 12V). I don't think this should be enough current draw to cause the rectifier to get that hot. The diodes I chose are 1N4001. Potentially could have done with 1N4007 instead, but I didn't even measure a noticeable difference in voltage drop across the two different diodes (the voltage drop being about 0.5V), and the 4001 are still rated abover 12V. The cap is 25V, 1000uF.
I've gotta be missing something obvious, but I just can't see it. Any ideas?