GB1347437A - Rectifier circuits using mos field effect transistors - Google Patents

Rectifier circuits using mos field effect transistors

Info

Publication number
GB1347437A
GB1347437A GB1347437DA GB1347437A GB 1347437 A GB1347437 A GB 1347437A GB 1347437D A GB1347437D A GB 1347437DA GB 1347437 A GB1347437 A GB 1347437A
Authority
GB
United Kingdom
Prior art keywords
amplifier
field effect
input
mos field
quasi
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
Application number
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB1347437A publication Critical patent/GB1347437A/en
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/25—Arrangements for performing computing operations, e.g. operational amplifiers for discontinuous functions, e.g. backlash, dead zone, limiting absolute value or peak value
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/22—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of ac into dc

Abstract

1347437 Rectifier circuits M OSHIMA 20 Oct 1972 48427/72 Heading H3T [Also in Division G1] A rectifier circuit suitable for use in a measuring instrument comprises a MOS field effect transistor T and an amplifier OP connected between the drain resistor R 1 and the gate electrode of T. An A.C. input voltage E of a low voltage such as resulting from sound pressure or vibration displacement is rectified by the MOS transistor T which functions as a highly linear switch even for low voltage signals. The amplifier OP provides sufficient amplification for all A.C. input signals present at P within the measuring range. A series circuit comprising a D.C. ammeter I and a resistor R 2 is provided for the measurement of the quasi-RMS current or the quasi-RMS voltage between the input P to the amplifier and earth. Components R 5 , C 2 and C 3 are provided for frequency compensation. A full wave rectified output may be obtained by using two circuits such as shown in Fig. 5.
GB1347437D 1972-10-20 1972-10-20 Rectifier circuits using mos field effect transistors Expired GB1347437A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4842772 1972-10-20

Publications (1)

Publication Number Publication Date
GB1347437A true GB1347437A (en) 1974-02-27

Family

ID=10448574

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1347437D Expired GB1347437A (en) 1972-10-20 1972-10-20 Rectifier circuits using mos field effect transistors

Country Status (1)

Country Link
GB (1) GB1347437A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0181017A1 (en) * 1984-10-05 1986-05-14 Koninklijke Philips Electronics N.V. Simulated transistor/diode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0181017A1 (en) * 1984-10-05 1986-05-14 Koninklijke Philips Electronics N.V. Simulated transistor/diode

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee