GB993437A - A circuit for producing positive or negative pulses from a d.c. source - Google Patents
A circuit for producing positive or negative pulses from a d.c. sourceInfo
- Publication number
- GB993437A GB993437A GB689762A GB689762A GB993437A GB 993437 A GB993437 A GB 993437A GB 689762 A GB689762 A GB 689762A GB 689762 A GB689762 A GB 689762A GB 993437 A GB993437 A GB 993437A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diode
- resistor
- capacitor
- source
- negative
- 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
- H03K3/57—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 semiconductor device
Landscapes
- Electronic Switches (AREA)
Abstract
993, 437. Bridges. JOSEPH LUCAS (INDUSTRIES) Ltd. Jan. 18, 1963 [Feb. 22, 1962], No. 6897/62. Heading G1U. [Also in Division H3] A bridge comprising equal resistors 10, 12, 13 and a variable resistance device 11 has diagonal output terminals 14, 15 and is energized by relaxation oscillations developed by a resistor 7 in series with a D.C. source and a four-layer breakdown diode to one input diagonal and a capacitor from the diode-resistor junction to the other input diagonal, whereby successive pulses are applied to the bridge, to develop pulses at 14, 15 which are negative or positive dependent on the resistance value of 11 being above or below the value of resistance of 10, 12, 13. A diode 16 supplemented by a diode 17 in series with capacitor 9 shunts device 11 so that the capacitor charging path does not include the load across 14, 15; the latter being returned to earth and the negative of the D.C. supply. Device 11 may be a switch, transistor, resistor, diode, photo-cell, or thermistor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB689762A GB993437A (en) | 1962-02-22 | 1962-02-22 | A circuit for producing positive or negative pulses from a d.c. source |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB689762A GB993437A (en) | 1962-02-22 | 1962-02-22 | A circuit for producing positive or negative pulses from a d.c. source |
Publications (1)
Publication Number | Publication Date |
---|---|
GB993437A true GB993437A (en) | 1965-05-26 |
Family
ID=9822815
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB689762A Expired GB993437A (en) | 1962-02-22 | 1962-02-22 | A circuit for producing positive or negative pulses from a d.c. source |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB993437A (en) |
-
1962
- 1962-02-22 GB GB689762A patent/GB993437A/en not_active Expired
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