I use arbitrary waveform generator TGA12104 for generating sine wave with following parameters(voltage - up to 10 V, current - up to 0.2 A, frequency - up to 0.1 Hz (most often about 0.005-0.05 Hz).

However, maximal power from the waveform generator is small for needed purpose and I would like to gain the output signal from the generator.

Could you prompt are there any amplifier with tunable gain ratio (in range 1-15) and accurate preservation of sine wave current with the same (although very low) frequency? If so, where can we find it?


closed as off-topic by Vladimir Cravero, JRE, Elliot Alderson, Dwayne Reid, Finbarr Jan 8 at 16:21

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  • \$\begingroup\$ Asking for device recommendations is off topic here. Your question will probably be closed for that. \$\endgroup\$ – JRE Jan 7 at 12:18
  • \$\begingroup\$ maybe the amplifier found here can work? systems.polyamp.com/file-archive/documentations/… \$\endgroup\$ – Anton Ingemarson Jan 7 at 15:25
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    \$\begingroup\$ What is the load on this amplifier? \$\endgroup\$ – The Photon Jan 7 at 16:10
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    \$\begingroup\$ Almost any power opamp should do this job in a DC-coupled configuration. Something like OPA541 is gross overkill, but it will work. \$\endgroup\$ – henros Jan 7 at 16:51
  • \$\begingroup\$ You can use a commercially-available Audio Power Amp of appropriate power rating so long as it is DC coupled. Or: you can build something similar for yourself. This site will help you design such a device that you can build yourself but asking for product recommendations is strictly off-limits. \$\endgroup\$ – Dwayne Reid Jan 8 at 0:52

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