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Home › Magazines › 2006 › January › Shutter Time Meter

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Shutter Time Meter

Accurate to 10 µs

Published in issue 350, January 2006

Shutter Time Meter
Despite the digital revolution there continue to be many photographers who still prefer to work with an ‘analogue’ SLR camera. While most of these cameras have a reliable mechanical construction, after years of use it is worthwhile to check and, if necessary, to adjust the shutter time. With this circuit we offer the ability to measure the shutter time accurately so that you can do this calibration yourself.

Components

Resistors:

R1 = 1k

R2 = 47k

R3 = 470k

R4 = 1M5

R5,R6,R10,R12 = 4k7

R7 = 10

R8 = 10M

R9 = 270k

R11 = 10k

R13-R20 = 68

Capacitors:

C1 = 100µF 25V radial

C2,C3 = 10pF

C4,C5,C6 = 100nF

C7 = 220µF 16V radial

C8,C9 = 10µF 63V radial

Semiconductors:

D1 = HSDL-5420 (Agilent) (Farnell)

D2 = 1N4004

T1 = BC557B

T2 = BC547B

T3 = BS170

IC1 = ICM7217AIPI (Maxim) (Digi-Key)

IC2 = 74HC4518

IC3 = 74HCU04

IC4 = 7805

Miscellaneous:

S1 = rotary switch, 6 positions, 2 poles

S2 = 6mm pushbutton, 1 make contact

LD1-LD4 = LTS-4301E (LiteOn) (Digi-Key: LTS4301-B, JR, JS, JF) common cathode 12.9 x 9.7 mm, 10-pin device

X1 = 100kHz quartz crystal

PCB, ref. 050199-1 from The PCBShop

Click below to download a PDF copy of this article from Elektor magazine.

 

Downloads 
PDF Article (U060150.pdf)
10 Elektor Credits
PCB layout (050199-PCB.pdf)
10 Elektor Credits
 

Order this magazine 
Magazine January 2006
UK-350 (US $ 6.20)
 

Order from Elektor 
PCB, bare
050199-1 (US $ 17.60)
Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

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