- #1
Phaedrus
- 26
- 0
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I am building a circuit such as the one above. The only difference is that it will be running for long periods of time. So heat becomes an issue. To make the most efficient and strongest electromagnet I am wondering what I should be looking for in core material. The cores will be 5/16" x 1 1/4" wrapped with 22 or 24 ga. magnet wire. This will be a DC circuit with voltages between 3-8 volts at around 1 amp give or take. Operating frequency will be between 80-160 Hz for long periods of time...like 20 minutes or more. There can be between 228-304 turns per coil...Not sure about this as the permeability and saturation is different for each core material. Also I'm trying to keep the resistance under 1 ohm per coil. If it means anything I will be using a capacitor in parrallel to the coils to catch the spark...usually a 30v 47uf.(incidentally if anyong can explain to me why changing the cap. value has such a drastic effect on the htz it would be greatly appreciated...I mean the cap. must be doing something besides just catching the spark...)
I am building a circuit such as the one above. The only difference is that it will be running for long periods of time. So heat becomes an issue. To make the most efficient and strongest electromagnet I am wondering what I should be looking for in core material. The cores will be 5/16" x 1 1/4" wrapped with 22 or 24 ga. magnet wire. This will be a DC circuit with voltages between 3-8 volts at around 1 amp give or take. Operating frequency will be between 80-160 Hz for long periods of time...like 20 minutes or more. There can be between 228-304 turns per coil...Not sure about this as the permeability and saturation is different for each core material. Also I'm trying to keep the resistance under 1 ohm per coil. If it means anything I will be using a capacitor in parrallel to the coils to catch the spark...usually a 30v 47uf.(incidentally if anyong can explain to me why changing the cap. value has such a drastic effect on the htz it would be greatly appreciated...I mean the cap. must be doing something besides just catching the spark...)