Some applications need more than an amplifier — they need a signal source and a power stage in one unit. Aigtek's ATG-3000 and ATG-300 power signal generator series combine sine, square, triangle, and pulse wave generation with power amplification, using the same current-driven approach to electromagnetic coil and magnetic material driving covered by the ATA-300/3000 amplifier series.
Amplifier-Plus-Generator vs Amplifier Alone
Where the ATA-300 and ATA-3000 amplifier series require an external signal generator, the ATG-3000 and ATG-300 series build the waveform generation directly into the unit — selectable between an internal source or an external input signal, depending on what the test setup requires. This reduces instrument count on the bench without giving up the flexibility to use an external, higher-precision signal source when needed.
ATG-3000 vs ATG-300
| Series | Bandwidth | Max Power | Max Current |
|---|---|---|---|
| ATG-3000 | DC~100kHz | 810Wp | 18Ap |
| ATG-300 | DC~30kHz | 810Wp | 18Ap |
Both series share identical maximum power and current ratings; the sole differentiator is bandwidth, with ATG-3000 extending three times further than ATG-300. Each series offers matched single-output and differential-output models at three power tiers (360Wp, 720Wp, 810Wp), so the choice of output configuration doesn't need to compromise on available power.
Applying the Same Coil-Driving Principle
As with the ATA-300/3000 amplifier series, magnetic field strength from an electromagnetic coil scales with current, not voltage — both ATG series are specified with the same 18A maximum current and 0.1Ω output impedance target for this reason. Selecting between them comes down to whether your test requires frequency content above 30kHz; if not, the lower-bandwidth ATG-300 covers the same power and current range at a correspondingly simpler specification.
Finch Electronic Solutions — Melbourne, Australia
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