- 開(kāi)關(guān)電源環(huán)路穩(wěn)定性測(cè)試配套的隔離變壓器，增益相位測(cè)試
- 10Hz supports off-line power supplies
- 45MHz high enough for even state of the art regulators
- 23 Octave range
- Low distortion for superior precision
- 5 Ohm termination for minimum impact to loop
- Includes attenuation to assure small signal measurement
| Performance at -10dBm input level | ||
| Characteristic | Rating | |
| DCR | ||
| Ratio | 1:1 | |
| Termination Impedance | 5 Ohms | |
| * Nominal 3dB Bandwidth | 10Hz - 45MHz (Terminated into 5 Ohms) 60Hz - 45MHz (Terminated into 50 Ohms) | |
| Isolation Voltage | 600V | |
| Isolation Capacitance | 150pF | |
| DC current | 10mA | |
| Temperature range | 0-50C | |
| Maximum Altitude | 6000 Ft | |
- 10Hz supports off-line power supplies
- 45MHz high enough for even state of the art regulators
- 23 Octave range
- Low distortion for superior precision
- 5 Ohm termination for minimum impact to loop
- Includes attenuation to assure small signal measurement
The usable bandwidth of an injection transformer is generally significantly greater than the 3dB frequency limits. This is because the transformer itself is outside of the measurement, leading many to incorrectly believe that the transformer is a non-critical element.
The bandwidth of the transformer is strongly related to the terminating impedance. The Bode-100, and most network analyzers, provide a 50 Ohm oscillator source impedance. Assuming this impedance the optimal termination resistor is 5 Ohms. This significantly attenuates the injection signal, which is generally beneficial, as a common error in Bode measurements is using a signal which is too large, and therefore not a small signal measurement. An added benefit of this low value is that it can generally be left in circuit at all times, simplifying the connection to the network analyzer without appreciably impacting the output voltage of the circuit being tested.
