From North Hills Signal Processing Corp.
After deciding which of the configurations is required, major characteristics of wideband transformers are:
Input and Output Impedances
Impedances are determined by the source and load impedances to be interfaced by the transformer. Inasmuch as the transformer is essentially a loss less device, terminal voltages and impedance levels are ideally related as v (Zin/Z out).
Bandwidth
Usually defined by the high and low frequencies where the amplitude response drops 3 dB below that at mid-frequency. Bandwidth may also be defined at the high end, as that frequency where a specified value of VSWR is not exceeded. A typical specification value would be 1.25:1 (-19 dB return loss).
Insertion Loss
Usually specified at mid-band, and typically on the order of 0.2 to 0.5 dB, depending on bandwidth and center frequency.
Power Level
Maximum input that the transformer must handle without
saturation, distortion or overheating.
Products & Services
RF Transformers
RF transformers transfer energy from one circuit to another by electromagnetic induction. Typically, they are used to increase or decrease voltage as it passes from one side through the other.
Signal Transformers
Signal transformers transfer information from one circuit to another by electromagnetic induction. They are used to increase or decrease the voltage from one side of a power transformer to the other.
Transformers
Transformers are electrical devices that are designed to transfer energy from one circuit to another by electromagnetic induction. They are used typically to increase or decrease voltage as it passes from one side of the device through the other.
Isolation Transformers
Isolation transformers provide electrical decoupling or isolation to two connected circuits. They have a turn ratio of 1:1.
Board Mount Transformers
Board mount transformers are transformers designed to be embedded in or mounted on computer boards.
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