Patent US 3633120A
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| Patent number | US 3633120A (click link for details and documents via Google Patents) |
|---|---|
| Title | Amplifier circuit |
| Inventors | Carl Battjes |
| Company | Tektronix Inc |
| Filing date | 1970-09-16 |
| Grant date | 1972-01-04 |
Related components:
| Manufacturer | Part | Description | Designers |
|---|---|---|---|
| Tektronix | 155-0061-00 | trigger amplifier | Hans Springer |
| Tektronix | 155-0064-00 | vertical output amplifier | |
| Tektronix | 155-0078-00 | broadband amplifier | John Addis |
| Tektronix | 155-0080-00 | vertical output amplifier | |
| Tektronix | 155-0175-00 | broadband amplifier | John Addis • Wink Gross • Carl Battjes |
| Tektronix | 155-0178-00 | horizontal output amplifier | Dave Morgan |
| Tektronix | 155-0181-00 | input amplifier | John Addis • Wink Gross |
| Tektronix | 155-0187-00 | ft doubler amplifier | |
| Tektronix | 203-0126-90 | ft doubler amplifier | Hans Springer |
This patent describes the ft doubler circuit, a transistor amplifier topology that has a current gain of 2 even at the transit frequency of the transistors that are used in the circuit.