Colin hoof
Member
I have recently rewound two mot transformers and have found both, to get very hot very quickly with no load connected to the secondary.I proceeded to connect the mains,to the secondary winding of another mot.This solved my immediate problem because the impedance of the winding was a lot higher.Also because of the turns ratio I achieved roughly the output voltage I needed 24.8volts.I have read that the transformer may be or is,in saturation and the only thing that is limiting the current,in the primary winding was the impedance of said winding which is very low about 2.2ohms compared to about 240 ohms when connected in reverse.
I really wanted to wind a secondary that has a centre tap,so I can have two independent dual rail supplies.This can only be achieved I fear,by using a different transformer or trying to add more resistance to the primary,without increasing the inductance and turns ratio of the primary compared to the secondary.I have rewound torodial transformers without an issue and would greatly appreciate,any information or feedback on what I could do,potentially to solve my problem.
I really wanted to wind a secondary that has a centre tap,so I can have two independent dual rail supplies.This can only be achieved I fear,by using a different transformer or trying to add more resistance to the primary,without increasing the inductance and turns ratio of the primary compared to the secondary.I have rewound torodial transformers without an issue and would greatly appreciate,any information or feedback on what I could do,potentially to solve my problem.