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Title: Lightmeter Post by: bird777 on December 18, 2007, 01:34:59 13:34 http://rapidshare.com/files/77410907/LIGHTMETER.pdf.html
Title: Re: Lightmeter Post by: pl4tonas on December 18, 2007, 06:09:41 18:09 this is an Elektor project from December 1977 issue.
It is build using a CA3130 opamp, a BPW21 photodiode, and an analog meter. Title: Re: Lightmeter Post by: JimBaton on December 20, 2007, 02:41:23 14:41 which analogues of CA3130 opamp, BPW21 photodiodei can use
Title: Re: Lightmeter Post by: snake2302 on December 21, 2007, 07:13:50 19:13 which?
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