Current transformerHMPT series

– PCB-mount type
– Very compact size, can be used directly as an electronic component
– High linearity, high précision, wide operating range -PBT flame retardant plastic casing
– Fully encapsulated with epoxy resin, high dielectric strength, résistant to harsh environments

Application note of current type voltage transformer
– PT sériés are miniature current type voltage transformers, are widely used in electric transmitters and power monitors etc., typical application diagrams are shown in Fig. I and Fig. 2. Input and output current ratio is 1: 1, maximum input current is 10mA, primary input voltage should be less than 1000Vac (connecting with current-limiting resistor).
Ratio error: ±0.2%, phase error: ±10′, output load close to zéro.
– Fig.l: Secondary load is close to 0, the primary input current is limited by RIN to 0-2mA, the transformer generates the same current of 0-2mA at the secondary output. The operational amplifier output voltage can be adjusted by résistance R.
– Fig.2: Transformer secondary output is connected directly with resistor R, the résistance should not be lower than 500Q, the maximum output voltage is 1.5Vac. The secondary output load is high, the phase error is high but the linearity keeps the same.

Type : current
Configuration : encapsulated
Applications : for electronics
Electrical characteristics : voltage
Mounting : PCB
Other characteristics : compact, epoxy resin, precision
Primary current : 2 mA, 5 mA, 10 mA