#15 in Semiconductor products
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Reddit mentions of STMicroelectronics L7805CV 5V 1.5A Positive Voltage Regulator, 5 Pieces
Sentiment score: 2
Reddit mentions: 4
We found 4 Reddit mentions of STMicroelectronics L7805CV 5V 1.5A Positive Voltage Regulator, 5 Pieces. Here are the top ones.
or
Output current up to 1.5 AOutput voltage of 5VDCThermal overload protectionShort circuit protectionOutput transition SOA protection
Specs:
| Height | 0.19 Inches |
| Length | 1.23 Inches |
| Number of items | 5 |
| Weight | 0.01 Pounds |
| Width | 0.42 Inches |
This is a Sky Quality Meter used for measuring the light pollution and skyglow at your location. It outputs values in uW/cm^2 for the infrared
and visible specturm and your limiting magnitude in Mag/arcsec^2.
It should be mentioned that these are all Amazon Prime links with two day shipping. If you can wait longer then, you can certainly get these components for far cheaper.
Rocker switch
http://smile.amazon.com/10Pcs-Round-Button-Rocker-Switch/dp/B00AKVBEN6
10 PCS @ $2.47 = $.25
Pushbutton
http://smile.amazon.com/Momentary-Tactile-Push-Button-Switch/dp/B00974ZGPE
10 PCS @ $5.59 = $.56
TSL2591 (High range light meter)
http://smile.amazon.com/Adafruit-TSL2591-Dynamic-Digital-ADA1980/dp/B00XW2OFWW
$11.44
MSP420 Stim32 I2C 128x64 OLED display
http://smile.amazon.com/SMAKN%C2%AE-Serial-128x64-Display-Arduino/dp/B010V0I8DY
$10.80
Arduino Pro Mini 16Mhz
http://smile.amazon.com/Enhancement-ATMEGA328P-Compatible-Arduino-TE362/dp/B015MGHLNA
5 PCS @ $15.99 = $3.20
5V Voltage Regulator
http://smile.amazon.com/Addicore-Positive-Regulator-L7805CV-Antistatic/dp/B00H7KTRO6
5 PCS @ $5.95 = $1.19
Grand total $27.44
You will also need an enclosure and a battery box or some other way of connecting power to the voltage regulator. I 3D-printed my enclosure but, I'm sure you can get
them cheap. As for a battery box, I use this:
http://smile.amazon.com/WAYLLSHINE-Battery-Spring-Plastic-Holder/dp/B019XT18IQ
6 PCS @ $6.98 = $1.16
I have no idea how to price the electrical tape you're going to need in order to cover the miniature star that is the power LED on the Pro Mini.
I suppose you could just desolder it. I'm not that brave. I used a 1/2 piece of black tape and blanketed the LED. Hopefully, not that much light will leak.
Awesome! Thank you! I'll have to try to find something similar. That seller has zero feedback, and shipping takes way too long from Hong Kong... : \
Would I be able to find something like that, or something like this locally at a radio shack or something?
Edit
I know the amazon link I put here is 5v, I'm also asking if they make these with 1.25-1.5V Outputs too?
You could also use an LM7805.
https://www.amazon.com/Addicore-Positive-Regulator-L7805CV-Antistatic/dp/B00H7KTRO6/ref=sr_1_cc_1?s=aps&ie=UTF8&qid=1468861711&sr=1-1-catcorr&keywords=lm7805
I suggest getting a 9V or 6V PSU and then run that through a regulator. I use L7805CV when I need a 5V regulator. I literally just used one today to power a arduino pro mini (a 5V micro controller). I suggest using decoupling capacitors with that regulator. 10μF should do the trick. Perhaps if you gave some specifics on what you're building we could be of more help. Usually the micro controllers can power components on their own. They probably wont be able to handle 3A on the 5V pins, but you can use a relay.