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Hey Mr. Astro !

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Astro_Pneumatic_Tools

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Oct 30, 2013
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Location
South El Monte
Battery powered? No
Accuracy? +/- 0.3V
What is the minimum voltage I can expect to read (with or without the light)? Around 11.5V on the 7763 and 2.5V on the 7764, and there is no light
What is the maximum voltage I can read without damaging the equipment? The max read is 24V on the 7763 and 48V on the 7764, unsure at what level it will damage the tool.
What is the "load" (resistance) of each? 7763: 12-20V (17mA), 20-24V (10mA), 7764: 3-20V (17mA), 20-48V (10mA)
 
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fatfillup

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Jan 17, 2009
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Location
Finksburg, Md
Wow, Mr. Astro missed his chance.

The correct answer to which one to buy is both

:lol_hitti

Those are both reasonably priced and should serve anyone well.

My decision would be based on what range I would be using them in but then I am thinking test light not digital meter.

Buy the wide range one.
 
J

joel63

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Joined
Oct 9, 2012
Messages
1,912
Location
Central FL
fatfillup said:
Wow, Mr. Astro missed his chance.

The correct answer to which one to buy is both

:lol_hitti

Those are both reasonably priced and should serve anyone well.

My decision would be based on what range I would be using them in but then I am thinking test light not digital meter.

Buy the wide range one.
Click to expand...

^^^^X2
Either would work for most purposes. Wide range as mentioned might be the more usefull one.

Snap on one costs 4-5 times as much.
 
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JRC3

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Location
Southwestern OH
I thought this was gonna be about the Chevrolet Astro van. I've owned three and thought I'd have something of value to contribute upon reading the title of the thread.

My life *****. LOL
 
A

Astro_Pneumatic_Tools

Well-known member
Joined
Oct 30, 2013
Messages
2,119
Location
South El Monte
fatfillup said:
Wow, Mr. Astro missed his chance.

The correct answer to which one to buy is both

:lol_hitti

Those are both reasonably priced and should serve anyone well.

My decision would be based on what range I would be using them in but then I am thinking test light not digital meter.

Buy the wide range one.
Click to expand...

Don't buy both, just get the 7764. Marginally more expensive and much wider range.

Nice simple, useful tool to have around, but i'd prefer to make it with a traditional test light in it as well so you have the choice to actually draw on circuits like a normal scope on a rope as well as read voltage. But no factory is willing to make it for me and I don't want to invest the time and money in making it from scratch.
 
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dnschmidt

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Oct 3, 2014
Messages
7,308
Location
Phoenix, AZ
Chris, instead you might want to consider using your efforts to make a conventional test light with a variable amperage draw containing a rheostat of some type. I've got these voltmeter lights and I don't find the voltage reading all of that useful. For one they are not accurate enough to satisfy me with respect to voltage drop tests and secondly we all have digital voltmeters so what's the point of the tool anyway. What would be great is a variable load test light. (I have like four different ones that I've made up all of which have a different amperage draw due to using different light bulbs). This is think would be a better tool for real circuit testing.
 
OP
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theoldwizard1

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Feb 22, 2011
Messages
43,399
Location
SE MI
Astro_Pneumatic_Tools said:
Nice simple, useful tool to have around, but i'd prefer to make it with a traditional test light in it as well so you have the choice to actually draw on circuits like a normal scope on a rope as well as read voltage. But no factory is willing to make it for me and I don't want to invest the time and money in making it from scratch.
Click to expand...
DAMN ! That's what I want also !

(I drug my 'scope on a rope out the other day. I understand why Eric O. likes his so much.)
 
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theoldwizard1

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Location
SE MI
dnschmidt said:
I have like four different ones that I've made up all of which have a different amperage draw due to using different light bulbs.
Click to expand...

Any cool designs or just kludges ?

Ivan (Pine Hollow Auto Diagnostics/MotoYam82) one time actually used a small headlight when he needed a bigger load.
 
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dnschmidt

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Oct 3, 2014
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Phoenix, AZ
I actually used Harbor Freight test lights and put different amperage bulbs into each of them. The style of bulb used is quite universal and they come in various amp draws. The most amp draw is a halogen light that has the same form factor as the HF bulb that comes stock. The only problem with this is that it puts out a ton of heat and you can't have this modified test light lit for too long or I'm sure it would melt the plastic handle of the test light. I don't find this to be an issue as normally test lights are used very intermittently by nature.
 
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dnschmidt

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Oct 3, 2014
Messages
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Location
Phoenix, AZ
No, I've forgotten, but what I did was go to an on-line light bulb seller and search for the bulb that came with it and find out what style of base it had. Once I located that I searched on that style of base and found all of the bulbs that would fit and picked several different amperage draw bulbs. It took the place a month to send me the bulbs that I ordered but I really didn't care too much about it.
 
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