Amplifier Harry Mayne Model R
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| Item | Amplifier Harry Mayne Model R |
|---|---|
| Item code | |
| Description | Push Pull O/P wit AVC |
| Manufacturer | Petty Geophysical |
| Circa | 1940 |
| Model | |
| Donor | Petty Collection |
| Location | The University of Texas at Austin |
| Serial number | |
| Taxonomy | GSHP027 |
Vacuum Tube Amplifier This is probably the most sophisticated vacuum tube amplifier ever made for seismic use. It was invented by W. Harry Mayne about 1940 and was known far and wide as Harry's Model FII. It had push-pull output, double acting AVC, etc. and it did everything. Petty made tons of them. Then came horizontal stacking (CRP by Mayne) and the need for more and smaller amplifiers.