GB1068634A - Improvements in or relating to voltage responsive trigger circuit arrangements - Google Patents
Improvements in or relating to voltage responsive trigger circuit arrangementsInfo
- Publication number
- GB1068634A GB1068634A GB2857964A GB2857964A GB1068634A GB 1068634 A GB1068634 A GB 1068634A GB 2857964 A GB2857964 A GB 2857964A GB 2857964 A GB2857964 A GB 2857964A GB 1068634 A GB1068634 A GB 1068634A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- ust
- transistor
- july
- trigger circuit
- 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
- H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
- H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
- H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
- H03K3/286—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable
- H03K3/2893—Bistables with hysteresis, e.g. Schmitt trigger
-
- 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
- H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Dc-Dc Converters (AREA)
Abstract
1,068,634. Triggered pulse generators. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. July 10, 1964 [July 23, 1963], No. 28579/64. Heading H3T. A Schmitt trigger circuit has an R.C. circuit across the transistor which is normally conductive so that application of a control voltage above a certain threshold value produces continuous oscillations. In Fig. 1 the feedback circuit R2, R3, C across transistor Tsl will ensure oscillation if the control voltage Ust is great enough for C to charge up sufficiently to produce conduction in Ts1 after it has been cutoff by multivibrator action. For values of Ust below this critical point the circuit will be quiescent, but will act as a monostable multivibrator if supplied with pulses which are short compared with the discharge time of C. If Ust is too large, oscillations can be inhibited again, and therefore the input is limited by a Zener diode Dz. The circuit is useful as a voltage discriminator in control systems, and can be transformer-coupled to a transistor current switching circuit and bridge rectifier to give a D.C. output (Fig. 2, not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET24346A DE1175734B (en) | 1963-07-23 | 1963-07-23 | Voltage-sensitive flip-flop with a stable rest position and a stable working position in which it executes square waves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1068634A true GB1068634A (en) | 1967-05-10 |
Family
ID=7551410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2857964A Expired GB1068634A (en) | 1963-07-23 | 1964-07-10 | Improvements in or relating to voltage responsive trigger circuit arrangements |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1175734B (en) |
| GB (1) | GB1068634A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0322964A2 (en) * | 1987-12-24 | 1989-07-05 | Philips Electronics Uk Limited | Voltage level sensing circuit arrangement |
-
1963
- 1963-07-23 DE DET24346A patent/DE1175734B/en active Pending
-
1964
- 1964-07-10 GB GB2857964A patent/GB1068634A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0322964A2 (en) * | 1987-12-24 | 1989-07-05 | Philips Electronics Uk Limited | Voltage level sensing circuit arrangement |
| EP0322964A3 (en) * | 1987-12-24 | 1990-08-22 | Philips Electronics Uk Limited | Voltage level sensing circuit arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1175734B (en) | 1964-08-13 |
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