| |
 |
|
Class Information
Number: 324/103P
Name: Electricity: measuring and testing > Measuring, testing, or sensing electricity, per se > Demand, excess, maximum or minimum (e.g., separate meters for positive and negative power, peak voltmeter) > Peak voltmeters
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4301407 |
Hand held testing device for indicating an electric test voltage |
Nov. 17, 1981 |
| 4296375 |
Level indicator for indication of maximum values |
Oct. 20, 1981 |
| 4295099 |
Peak detector |
Oct. 13, 1981 |
| 4271391 |
Digital voltmeter with electro-optical indication of the waveform |
Jun. 2, 1981 |
| 4263548 |
Midpoint measuring circuit |
Apr. 21, 1981 |
| 4262255 |
Level indicating device |
Apr. 14, 1981 |
| 4259631 |
Method and arrangement for measuring the attenuation-versus-frequency characteristics of two-ports |
Mar. 31, 1981 |
| 4251769 |
Indicator and limit value alarm device |
Feb. 17, 1981 |
| 4236111 |
Method and apparatus for the measurement of electric currents and/or voltages in a plurality of current or voltage circuits |
Nov. 25, 1980 |
| 4223682 |
Beat-to-beat systolic and diastolic indicator |
Sep. 23, 1980 |
| 4223180 |
Human speech envelope tracker |
Sep. 16, 1980 |
| 4213085 |
Phase inversion test device |
Jul. 15, 1980 |
| 4187461 |
Dynamic threshold impulse directivity indicator |
Feb. 5, 1980 |
| 4183025 |
Level indicating system |
Jan. 8, 1980 |
| 4177424 |
Methods of and a circuit for monitoring the amplitude of sine wave-shaped signals |
Dec. 4, 1979 |
| 4175252 |
Meter drive circuit |
Nov. 20, 1979 |
| 4166245 |
Simultaneous display of multiple characteristics of complex waveforms |
Aug. 28, 1979 |
| 4165508 |
Method and apparatus for detecting a peak value of an analog signal |
Aug. 21, 1979 |
| 4162444 |
Peak level detector |
Jul. 24, 1979 |
| 4158809 |
Signal measuring and display control method and apparatus |
Jun. 19, 1979 |
| 4151464 |
Integrating voltage to frequency converter and memory decoder |
Apr. 24, 1979 |
| 4144492 |
Method for measuring a voltage with the aid of an analogue-digital converter |
Mar. 13, 1979 |
| 4143317 |
Multiple range peak reading voltmeter |
Mar. 6, 1979 |
| 4112264 |
Testing and switching system including remotely controllable stations for information transmission and communications networks and systems |
Sep. 5, 1978 |
| 4109198 |
Peak level indicating electronic circuit |
Aug. 22, 1978 |
| 4096435 |
Level indicating device |
Jun. 20, 1978 |
| 4075513 |
Averaging and peak detection circuit |
Feb. 21, 1978 |
| 4074149 |
Peak detecting with constant fractional offset |
Feb. 14, 1978 |
| 4069452 |
Apparatus for automatically detecting values of periodically time varying signals |
Jan. 17, 1978 |
| 4065682 |
Logarithmic converter |
Dec. 27, 1977 |
| 4057754 |
Apparatus to measure the eccentricity of a shaft |
Nov. 8, 1977 |
| 4053799 |
Voltage memory device |
Oct. 11, 1977 |
| 4045732 |
Device for sensing the operative status of electrical equipment |
Aug. 30, 1977 |
| 4038568 |
Pulse peak sample and hold circuit |
Jul. 26, 1977 |
| 4036607 |
Method and relevant apparatus to check the rotation of mechanical workpieces being machined on grinders |
Jul. 19, 1977 |
| 4024459 |
Amplitude measurement of signals of different frequency |
May. 17, 1977 |
| 4006413 |
Field instrument for measurement of AC voltage fluctuations |
Feb. 1, 1977 |
| 4004220 |
Electronic voltmeter |
Jan. 18, 1977 |
| 3999125 |
Peak detector having signal rise-time enhancement |
Dec. 21, 1976 |
| 3987393 |
Line voltage monitor |
Oct. 19, 1976 |
| 3984772 |
Signal peak detection arrangement |
Oct. 5, 1976 |
| 3979670 |
Apparatus for detecting and measuring peak-to-peak values in electrical signals |
Sep. 7, 1976 |
| 3973197 |
Peak detector |
Aug. 3, 1976 |
| 3965419 |
Cathode ray tube meters |
Jun. 22, 1976 |
| 3949294 |
Level indicating system |
Apr. 6, 1976 |
| 3947761 |
Peak level indicator |
Mar. 30, 1976 |
|
|
|
