ECN Forum Forums Technical Discussion Electrical Theory and Applications Choke Transformer Schematic

This connection is similar to the "Boost" transformer, except the relative polarity is Series Subtractive, plus the connection creates a "Choking Effect" on the current that flows through the secondary coil - hence the name "Choke Transformer".
This lowers the voltage, plus limits the current.
The current limiting action is similar to how a Ballast functions [Typical Magnetic Reactor, HX, CWA Ballasts used for HID and Fluorescent lamps].
Maximum output current is based on the secondary winding's ability to create current, so the short circuit current would be what ever the secondary coul can produce [same as the reactor type Ballast].
Total KVA that can be drawn through the secondary is figured same as any other Buck/Boost transformer - % of Pri/Sec voltage
Example: 120 x 12 VAC - 1 KVA = 1000% of 1 KVA , or 10 KVA max.
Another example: 240 x 12 VAC - 1 KVA = 500% of 1 KVA, or 5 KVA max.

Hope everyone likes these schematics!!

Any comments???

Scott SET

[This message has been edited by Webmaster (edited 06-18-2001).]