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electronics hook up questions.
Does anyone know the voltage requirements for the Heng Long running lights. I have hooked them directly to 1.5, 3 and 4.8 volts without a flcker and don't want to burn them out by going higher.
Where should the Heng Long smoke units electrically connect in a Tam. FO equipped tank? I would guess into one of the motor connections but? |
RE: electronics hook up questions.
I don't really know, but I can tell you from experience that hooking them directly to the on/off switch will burn them out[:@] so don't do that. I'm sure someone else knows more thou.
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RE: electronics hook up questions.
4-5v, no higher.
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RE: electronics hook up questions.
not a pro here but I think it does make a difference which leg you connect to the plus and minus. BIGMIG :D
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RE: electronics hook up questions.
To get a little technical here, they are white LED's and as such are rated at 20mA. I know that this is a fat lot of use to most users, however it works out at around 3.2v, and yes they are polarity sensitive. On HL they are wired in parallel so you need to double the current required. If you want to connect them up to the battery you can either wire them in series, and add a 39ohm resistor, wire them in parallel and put a 100ohm resistor in series with them. If you want to connect the the TK-RX13# or TK-RX14 5v then you will need to connect them in parallel and put an 81ohm in series.
I know that this is a little geeky but you did ask! Yours Simon M. P.S. One method to tell which way to connect an LED up is to look very closely in to the package. One connector is smaller than the other. In the vast majority of cases this is the +. In over 25years of using the things I can only think of one package where this was not the case. |
RE: electronics hook up questions.
ORIGINAL: samarkh To get a little technical here, they are white LED's and as such are rated at 20mA. I know that this is a fat lot of use to most users, however it works out at around 3.2v, and yes they are polarity sensitive. On HL they are wired in parallel so you need to double the current required. If you want to connect them up to the battery you can either wire them in series, and add a 39ohm resistor, wire them in parallel and put a 100ohm resistor in series with them. If you want to connect the the TK-RX13# or TK-RX14 5v then you will need to connect them in parallel and put an 81ohm in series. I know that this is a little geeky but you did ask! Yours Simon M. P.S. One method to tell which way to connect an LED up is to look very closely in to the package. One connector is smaller than the other. In the vast majority of cases this is the +. In over 25years of using the things I can only think of one package where this was not the case. We are not so standardized here in the states, my superbright LED's the long one is the positive! I'm not sure on the Heng longs I always have a 3 volt 2025 battery on hand to double check, because for some reason manufacture over here like to switch the polarity on the Red ones, and plus I frequently cut the leds so I need to confirm anyway! The Blitz |
RE: electronics hook up questions.
Thanks for the info on the leds guys, that helps. now how about the smoke unit hook up?
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RE: electronics hook up questions.
Is your smoker normal (two wires with a white plug) or proportional (2 wires to a white plug, 2 sets of 2 wires with bare ends)
If its a normal non-prop smoker, simply connect it with a switch (so you can shut it off), to the battery. If proportional, the plug end needs snipping off and wiring to the battery (again, with a switch) and the other 2 sets of 2 go to each motor (for "sense" of how much smoke to produce) |
RE: electronics hook up questions.
You cann't go by lead length. the get trimmed sometimes, other manufacturers have the lattitude to change what they produce.
The visual tell is to look at the diode encapsulation itself: the negative side is the larger metal section in the encapsulation, the positive is the smaller that doesn't even look like it touches the other side. Quickest way to figure out which is which is to hook up power with a current limiting resistor. You can use a 9V radio bat with, say a 1Kohm resistor and be safe for just about any diode. Look at the machine gun diode, or the airsoft warning diode. If memory serves correctly (not always a given at this age.....) they both have the current limiters in line. Have fun, Splat |
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