GB908165A - Improvements relating to potentiometer circuits - Google Patents
Improvements relating to potentiometer circuitsInfo
- Publication number
- GB908165A GB908165A GB366961A GB366961A GB908165A GB 908165 A GB908165 A GB 908165A GB 366961 A GB366961 A GB 366961A GB 366961 A GB366961 A GB 366961A GB 908165 A GB908165 A GB 908165A
- Authority
- GB
- United Kingdom
- Prior art keywords
- potentiometer
- galvanometer
- circuit
- zener diode
- balance
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
908,165. Voltage measurement. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. Jan. 31, 1961, No. 3669/61. Class 37. A potentiometer circuit for measuring small D.C. voltages employs a source of D.C. power controlled by a Zener diode so as to give a constant potential regardless of current in the circuit. Fig. 2 shows such a circuit wherein a battery 2 and a series resistor 6 is shunted by a Zener diode 7 and by a resistor R. The resulting output is applied across the fixed resistance elements I and II of a potentiometer having decimal tapping elements III and IV across which a small D.C. voltage to be measured is applied via a galvanometer 5. When the decimal elements III and IV have been adjusted to obtain a null reading of the galvanometer the value of the unknown D.C. is obtained by simple ratio from the potentiometer readings. A method of measuring small resistances is described in which a known resistance RK, Fig. 6, is connected in series with an unknown resistance RX and balance, indicated on galvanometer 5, obtained with a potentiometer circuit 1 by means of a voltage adjuster 13, the said potentiometer including a Zener diode controlled voltage source. After balance has been obtained a switch 14 is moved to couple the unknown resistance RX via the galvanometer to the adjustable tapping elements III and IV of the potentiometer and balance again obtained by adjusting the elements III and IV. The value of RX is again found by simple ratio from the potentiometer readings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB366961A GB908165A (en) | 1961-01-31 | 1961-01-31 | Improvements relating to potentiometer circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB366961A GB908165A (en) | 1961-01-31 | 1961-01-31 | Improvements relating to potentiometer circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB908165A true GB908165A (en) | 1962-10-17 |
Family
ID=9762710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB366961A Expired GB908165A (en) | 1961-01-31 | 1961-01-31 | Improvements relating to potentiometer circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB908165A (en) |
-
1961
- 1961-01-31 GB GB366961A patent/GB908165A/en not_active Expired
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