* Pictures are placed for illustration purpose only. Appearance of real component may differ
Matching low-frequency transformers are suitable for operation in boreal climate conditions at ambient temperature from - 60… to +85 oC, including coil overheating and relative humidity up to 93% at +25 oC.
TOT-type transformers are used in household and industrial audio frequency amplifiers.
Transformers are manufactured as assembly components for PCB of semiconductor-based devices.
Electrical parameters
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| Basic Parameters | |
| Active bandpass operating range | 300… 10000 Hz |
| Rated power range | 0.025… 25 V-A |
| Resonant frequency range | 800… 1000 Hz |
| Maximum primary-winding voltage | 100 V |
| Maximum test voltage value | 500 V |
| Total harmonic distortion at cutoff frequency of active bandpass from 300…to 10 000 Hz | max 5% |
| Amplitude-frequency distortion in the frequency range between 300…and 10 000 Hz | max 2 dB |
| Maximum alternating input voltage | 140 V |
| Maximum voltage imbalance of transformer winding sections with the same number of turns | 3% |
| Transformer input impedance range | 13… 22000 Ohms |
| Transformer ratio value | see table 4.5 |
| Load impedance | 4… 4000 Ohms |
| Maximum transformer ratio deviation | ± 5% |
| Minimum winding insulation resistance | 1.0 MOhms |
| Maximum DC voltage across a winding relative to magnetic core | 100 V |
| Operating Conditions | |
| Ambient temperature high operating temperature high-limit temperature low operating temperature low-limit temperature low transportation temperature temperature change (repeated exposure) | +85 oC +125 oC – 45 oC – 60oC – 60oC – 60… +125oC |
| Relative air humidity at t= +25 oC | max 93 ± 3% |
| Atmospheric air pressure: low operating pressure low-limit pressure high operating pressure | 12.1 kPA (90 mmHg) 0.67 kPa (5 mmHg) 107 kPa (800 mmHg) |
| Maximum vibration load with acceleration in the frequency range from 1… to 2000 Hz | 98.1 m/s2 (10g) |
| Multiple impacts with acceleration, and duration from 1 to 5 ms | max 1472 m/s2 (150g) |
| Single impacts with acceleration, and duration from 0.2 to 1 ms | 4905 m/s2 (500g) |
| Maximum linear (centrifugal) load with acceleration | 981 m/s2 (100g) |
| Maximum audible noise with band pressure level in the frequency range from 50…to 10000 Hz | 160 dB |
| Climate version | boreal or all climate version |
