JPS61184425A - 測光回路 - Google Patents

測光回路

Info

Publication number
JPS61184425A
JPS61184425A JP2589385A JP2589385A JPS61184425A JP S61184425 A JPS61184425 A JP S61184425A JP 2589385 A JP2589385 A JP 2589385A JP 2589385 A JP2589385 A JP 2589385A JP S61184425 A JPS61184425 A JP S61184425A
Authority
JP
Japan
Prior art keywords
voltage
transistor
source
gate
constant
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.)
Granted
Application number
JP2589385A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0414740B2 (OSRAM
Inventor
Nobuyuki Suzuki
信行 鈴木
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP2589385A priority Critical patent/JPS61184425A/ja
Publication of JPS61184425A publication Critical patent/JPS61184425A/ja
Publication of JPH0414740B2 publication Critical patent/JPH0414740B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/44—Electric circuits

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
JP2589385A 1985-02-12 1985-02-12 測光回路 Granted JPS61184425A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2589385A JPS61184425A (ja) 1985-02-12 1985-02-12 測光回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2589385A JPS61184425A (ja) 1985-02-12 1985-02-12 測光回路

Publications (2)

Publication Number Publication Date
JPS61184425A true JPS61184425A (ja) 1986-08-18
JPH0414740B2 JPH0414740B2 (OSRAM) 1992-03-13

Family

ID=12178468

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2589385A Granted JPS61184425A (ja) 1985-02-12 1985-02-12 測光回路

Country Status (1)

Country Link
JP (1) JPS61184425A (OSRAM)

Also Published As

Publication number Publication date
JPH0414740B2 (OSRAM) 1992-03-13

Similar Documents

Publication Publication Date Title
JPS6144360B2 (OSRAM)
US4560921A (en) Comparator circuit with built in reference
JPH0152783B2 (OSRAM)
JPS6311877B2 (OSRAM)
JPS613215A (ja) 実効値負荷平均電圧制御装置用の集積化可能な負荷電圧サンプリング回路
JPS58149595A (ja) 電流送信機
JPS61184425A (ja) 測光回路
US4160160A (en) Circuit for integrating a quantity of light in an automatic control type flash unit
JPH0326435B2 (OSRAM)
JPS589589A (ja) 小型直流モ−タの速度制御回路
JPH0413692Y2 (OSRAM)
JPH10321935A (ja) 発光素子駆動回路
SU1046747A1 (ru) Стабилизатор напр жени посто нного тока
SU1589377A1 (ru) Усилитель мощности
SU1025010A1 (ru) Генератор треугольно-трапецеидального напр жени
SU1734027A1 (ru) Устройство дл измерени напр жени
SU1740996A1 (ru) Полупроводниковый датчик температуры
JPS6241330B2 (OSRAM)
SU989549A1 (ru) Импульсный стабилизатор посто нного напр жени
JPS59218520A (ja) 自動制御回路
JPS5947356B2 (ja) 抵抗変化センサ用対数変換回路
JP3671519B2 (ja) 電流供給回路
JPH0211014A (ja) 受光回路及び光結合回路
SU1176290A1 (ru) Экспонометрический прибор
SU1348802A1 (ru) Стабилизатор посто нного напр жени