I bought this meter decades ago while picking up some material from an electrical distributor. It's a super simple light meter, but is not bad as a rough indicator of intensity in a room.
The schematic is breathtakingly simple, as shown.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
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The schematic is breathtakingly simple, as shown.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
http://www.bigclive.com/coffee.htm
Just like the one in the Russian-made Zenit SLR I bought in Poland back in the mid '80s. We might laugh in these days of all-digital processing, but solar cells were quite consistent in their readings and certainly good enough for the task.
enforce provision figure next aide rebel regulatory land
you know BEHA is a pretty hilarious name in dutch its the dutch word for 'bra' 😛
Hey, Clive, you've got a missing image on your webpage. Just thought I'd let ya know.
Oh look, fucking you tube un-subbed another channel again. This is getting annoying. I watch your channel all the time. Why the hell would I un-sub?
just came up with a life hack….maybe done before maybe not?
i had a 50 watt led driver with matching led and a hacked together 7812 driving a computer fan off of the 32 volts off of the driver, the led died….i didnt have any more 50 watt leds, plenty of 100 watt leds though, simple solution? run a blade along the traces of half of the leds dies(in reality, i only cut 4 rows so its underpowering them slightly with 60 dies active, just thought i'd pass it on
Hey Clive, I just wanted to let you know because I don't think anyone has said anything about it, but I think your websites images are down.
Being a photographer I found this incredibly interesting. Thank you Clive.
Solar panel based, i got an An old selenium one
im wondering how i could ask for you to test something as iv got something from ebay and was wondering if youd be able to get 1 and see how safe it is
Thee schematic is weird, I'd have expected a straight potential divider, with the solar cell going to the top terminal and the meter coming off the wiper. As it is, one half of the pot provides a load for the cell, and thus establishes the constant factor for a voltage proportional to the amount of light, while simultaneously the other half acts a series resistance for the meter, thus providing input into the voltage-to-FSD equation.
I mean, with just three components and an analog pot I suppose it still works — but it's weird.
Isn't the potentiometer splitting the load, so they can precisely configure the meter for the printed lux display?
All the photos on your website are broken 🙁
BEHA is BRA in Dutch, so I read "Inside an old BRA," I was a little confused for a moment…
If i wanted to mail you something how would i go about doing that?