? coilcraft, inc. 2010 specifications subject to change without notice. please check our website for latest information. current sensing transformers document 132 document 132 revised 007/02/10 these low cost coilcraft current sensing transformers are designed for use up to 100 khz. they incorporate the current and sense windings in one small, encapsu- lated package requiring minimum board space. varying the terminating resistance allows sensitivities of 1 to 100 volts output per ampere input. coilcraft current sensing transformers are designed to provide 6 mm creepage/clearance between primary and secondary windings. winding to winding isolation is 3750 vrms. applications include feedback control, overload sens- ing, detecting load drop or shutdown, and proportional output. coilcraft designer?s kit p403 contains the three stan- dard current sensing transformers, sensor-only versions of each, plus two 50/60hz current sensors. to order, contact coilcraft or visit http://order.coilcraft.com. frequency sensed terminating r t for part turns (n) inductance 1 range 2 current resi stance r t 3 1 v out number pri : sec min (mh) (khz) range i in range (ohms) from 1 a i in cs4050v-01l 1 : 50 5 5 ? 25 2 ma ? 10 a 50 ? 5000 50 ohms CS4100V-01L 1 : 100 20 5 ? 50 5 ma ? 24 a 100 ? 10,000 100 ohms cs4200v-01l 1 : 200 80 1 ? 100 5 ma ? 35 a 200 ? 20,000 200 ohms coilcraft cs-4 0v-al current sense xx xxxxx 0000 max 0.75 19,05 0.105/0.150 2,67/3,81 0.77 19,56 0.03 0,76 internal code 0.40 0.01 10,16 0,25 4 4 1 1 2 2 3 3 max c l c l max 0.57 14,48 0.052 1,321 0.041 1,041 0.069 1,76 0.088 2,23 recommended pc board layout 0.20 0.005 5,08 0,125 0.30 0.005 7,62 0,125 0.060 0.460 1,52 11,68 weight: 8.8 ? 9.3 g terminations: tin-silver over copper packaging: 28 per tube 1. inductance is for the secondary, measured at 15.75 khz, 1 vrms. 2. square wave response deteriorates above and below this frequency. 3. varying terminating resistance increases or decreases output voltage/ampere according to the following equation: r t = v out n sec / i in 4. operating temperature range ?40c to +85c. 5. electrical specifications at 25c. 3 sec pri 2 1 4 r t v out i in typical circuit
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