GB593461A - Electric pulse generating system - Google Patents
Electric pulse generating systemInfo
- Publication number
- GB593461A GB593461A GB3576/44A GB357644A GB593461A GB 593461 A GB593461 A GB 593461A GB 3576/44 A GB3576/44 A GB 3576/44A GB 357644 A GB357644 A GB 357644A GB 593461 A GB593461 A GB 593461A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulse
- valve
- edge
- potentiometer
- condenser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
- H03K3/55—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback the switching device being a gas-filled tube having a control electrode
Landscapes
- Radar Systems Or Details Thereof (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
593,461. Impulse generators. STANDARD TELEPHONES & CABLES, Ltd. Feb. 25, 1944, No. 3576. Convention date, Feb. 27, 1943. [Class 40 (v)] In a pulse generator, a gas-filled valve is fired to develop a pulse in the cathode circuit, the pulse effecting the build-up of a potential controlling means for shunting the cathode circuit to define the trailing edge of the pulse. Gas-filled triode 10, fired by a triggering pulse when the A.C. fed over lead 20 is near its peak value, forms the leading edge 41 of a positive pulse on the cathode of valve 10. Condenser C2 charges over resistance R3, reducing the bias on gas-filled triode 12 until valve 12 fires, shunting the upper part of potentiometer R2 and defining the trailing edge 53 of the pulse. The fall in the A.C. voltage on lead 20 extinguishes valves 10, 12, condenser C2 discharging through the grid path of valve 12 acting as a hard diode. The duration of the pulse is determined by the time-constant circuit R3, C2 and the setting of potentiometer R2. Valve 10 may be biassed so that it fires at a point on the positive half-wave or D.C. may be used, the valves being extinguished by a negative impulse or the opening of the anode circuit of valve 10. Condenser C1 controls the shape of the leading edge 41 and may give an extension 76. As applied to a radar system, Fig. 3 (not shown), the modulator pulse triggers the device, edge 41 being coincident with the commencement of the time base trace. Adjustment of potentiometer R2 causing edge 53 to become coincident with the trailing edge of an echo, enables the range to be read from a calibrated dial. A phase-shifting device may be included in the lead 20 to ensure valve 10 triggering at the correct point in the A.C. mains cycle. Specification 593,467 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US593461XA | 1943-02-27 | 1943-02-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB593461A true GB593461A (en) | 1947-10-17 |
Family
ID=22022373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3576/44A Expired GB593461A (en) | 1943-02-27 | 1944-02-25 | Electric pulse generating system |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB593461A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1012327B (en) * | 1954-01-30 | 1957-07-18 | Deutsche Bundespost | Arrangement for the time shifting of periodic or non-periodic pulses |
-
1944
- 1944-02-25 GB GB3576/44A patent/GB593461A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1012327B (en) * | 1954-01-30 | 1957-07-18 | Deutsche Bundespost | Arrangement for the time shifting of periodic or non-periodic pulses |
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