Loading...
Please wait, while we are loading the content...
Similar Documents
Ultra-stable oscillator with complementary transistors
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1974 |
| Description | A high frequency oscillator, having both good short and long term stability, is formed by including a piezoelectric crystal in the base circuit of a first bi-polar transistor circuit, the bi-polar transistor itself operated below its transitional frequency and having its emitter load chosen so that the input impedance, looking into the base thereof, exhibits a negative resistance in parallel with a capacitive reactance. Combined with this basic circuit is an auxiliary, complementary, second bi-polar transistor circuit of the same form with the piezoelectric crystal being common to both circuits. By this configuration small changes in quiescent current are substantially cancelled by opposite variations in the second bi-polar transistor circuit, thereby achieving from the oscillator a signal having its frequency of oscillation stable over long time periods as well as short time periods. |
| File Size | 526780 |
| Page Count | 7 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740012749 |
| Archival Resource Key | ark:/13960/t5v746n39 |
| Language | English |
| Publisher Date | 1974-04-23 |
| Access Restriction | Open |
| Subject Keyword | Thermodynamics And Combustion Transistor Circuits High Frequencies Piezoelectric Crystals Oscillators Stable Oscillations Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
