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    • Overall Rating: 5
    • Price: 5
    • Quality: 5
    • Ease Of Use: 5
    • Usefulness: 5
    2 DXPoints
    earned for this post
    pH meter with laboratory precision.

    posted by lasermanathome on 05/11/2013 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

    Pros:
    This type pH meter is known by me, during laboratory research I have used these meters for years. They are as reliable as table-instruments but are much smaller and more easy to handle. The two ponits calibration make that the zeropoint ((pH 7.00) is better...
    Cons:
    As all pH meters, the electrodes are very sensitive for dirt and mechanical impact. The measutement is as precise as the qualit...
    View Detail » 
    • Overall Rating: 5
    • Price: 4
    • Quality: 5
    • Ease Of Use: 4
    • Usefulness: 5
    2 DXPoints
    earned for this post
    Very small R5 units, very bright.

    posted by lasermanathome on 05/04/2013 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

    Pros:
    These very small emitters can be mount on an E10 bulbmount, wich is in use for bike headlights and many older flashlights. Can also be mounted on a maglightbulb (the metal part). Take care of cooling and current (1500mA max) and you will have an extreme im...
    Cons:
    Delivered only nine of ten. The RMA procedure takes to much time to get my right, how to prove to get someting NOT. But that is...
    View Detail » 
    • Overall Rating: 5
    • Price: 5
    • Quality: 5
    • Ease Of Use: 5
    • Usefulness: 5
    2 DXPoints
    earned for this post
    Very small class D amplifier

    posted by lasermanathome on 04/20/2013 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

    Pros:
    Small PCB with high output and almost no loss of energy, so it does not spoil much heat and therefor the cooling is very tiny. Nice build quality , have to test how it sound yet but experience about the concept tells me that a good class D amps sounds ver...
    Cons:
    Nominal (RMS) is about only 2X40 Watt, no 2X100 Watt, that should be the theoretical max during music peeks (clipping power)
    View Detail » 
    • Overall Rating: 5
    • Price: 5
    • Quality: 5
    • Ease Of Use: 3
    • Usefulness: 5
    2 DXPoints
    earned for this post
    The SUN in your hand

    posted by lasermanathome on 04/09/2013 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

    Pros:
    Propably the brightest flashlight there is. I have already the 35 W version (costed twice as much) and that ome was already a laserbeam-like fotoncannon. This 45-65-85 Watt version is more than twice as bright, the prommised 8500 lumens is not exaggerated. ...
    Cons:
    All the HID (flash)lights become very hot, the glass glows after run so 600-800 centigrades for the bulb makes it a lamp for pr...
    View Detail » 
    • Overall Rating: 5
    • Price: 5
    • Quality: 5
    • Ease Of Use: 5
    • Usefulness: 5
    2 DXPoints
    earned for this post
    Dupont (=high quality) jumperwires for many applications

    posted by lasermanathome on 03/15/2013 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

    Pros:
    These jumperwires are ideal to connect laserdiodes without using heat like soldering. The small and reliable connectors prohibit a lot of broblems with sensitive electronic parts. You can use them for just breadboards but a male-male is in that case the be...
    Cons:
    No
    View Detail » 
    • Overall Rating: 5
    • Price: 5
    • Quality: 5
    • Ease Of Use: 5
    • Usefulness: 5
    2 DXPoints
    earned for this post
    power booster dc-dc 12 V in 13=34.43V out

    posted by lasermanathome on 03/15/2013 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:more than 1 month

    Pros:
    one of the finest boosters I know, I have used several of these for different applications. It works fine as fast start-help for cars with empty batteries, in that case I have a 12V 17AH gel-lead battery , connected to this booster and make 14.4 VDC (the vo...
    Cons:
    DO NOT change + and -- (wrong polarised), it kills the booster without furter warning or delay, I have made that mistake.........
    View Detail » 
    • Overall Rating: 5
    • Price: 5
    • Quality: 5
    • Ease Of Use: 5
    • Usefulness: 5
    2 DXPoints
    earned for this post
    professional oixmeter with BPM/beatmonitor

    posted by lasermanathome on 03/14/2013 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

    Pros:
    Perfect working oximeter with a kind of monitor what shows the power of the bloodflow. Works better than devices I have seen wich costs 10-20 times what this unit costs and without the monitorfunction. Have compaired it with known oximeters and it gave the ...
    Cons:
    None, except something to put it in and protect it against sharp objects in your pocket. The batteries wich should be in the bo...
    View Detail » 
    • Overall Rating: 5
    • Price: 5
    • Quality: 5
    • Ease Of Use: 5
    • Usefulness: 5
    2 DXPoints
    earned for this post
    flashlight for every situation

    posted by lasermanathome on 03/14/2013 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

    Pros:
    nice, small and reliable divers-flashlight wich is also handy for common use. This diverslight has 2 brightness modes and one strobe, wich is for signing that you are in trouble very handy. The low mode is less than half (about 20% estimated) and gives a s...
    Cons:
    Another divinglight from DX has a PMMA optic wich gives much more throw and almost no spill but this one is with about 800 lume...
    View Detail » 
    • Overall Rating: 4
    • Price: 5
    • Quality: 3
    • Ease Of Use: 3
    • Usefulness: 3
    2 DXPoints
    earned for this post
    Stable PWM modulator

    posted by lasermanathome on 03/06/2013 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:more than 1 month

    Pros:
    Delivers PWM and does that in a stable way Has a 7805 on board so DC voltage above 8 VDC works fine.
    Cons:
    Voltage undependable 2.98KHz was the max frequence. The output can not deliver current, without the collaps of the outputvoltag...
    View Detail » 
    • Overall Rating: 5
    • Price: 5
    • Quality: 5
    • Ease Of Use: 5
    • Usefulness: 5
    2 DXPoints
    earned for this post
    Good connectors for high current and low voltages

    posted by lasermanathome on 02/22/2013 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

    Pros:
    Strong connectors with good safety against wrong polarity for high current, they are also suitable to connect loudspeakers. Careful solder and handwork is needed to make it all work .
    Cons:
    Do NOT use them above 48VAC/VDC and connect the female to the powersource!! Not a con for experienced people...
    View Detail » 
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