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Old 12-22-2006, 04:19 PM   #1
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Default What does a schottky diode do?

I'm still pretty new to RC And I don't know what capacitors and schottky diodes do.
can i use them with a team orion method R motor?
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Old 12-22-2006, 04:35 PM   #2
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A capacitor goes onto an ESC and it stores current,
It helps alot with keeping the ESC cool when you are using low turn motors,
A sckotty diode goes between the motor and the ESC and tries to avoid current travelling back to the ESC from the motor causing it to blow up... Hope this helps
And yes they can be used with any motor
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Old 12-22-2006, 06:19 PM   #3
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The sckotty diode does something for your brakes. A few hotdogs at our track say you don't really need them and have never used one. I run brushless now, but I have gone with and without on my brushed, and haven't felt any difference.
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Old 12-22-2006, 07:52 PM   #4
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A change on topic... I got my new Moped ESC today but something seems to be wrong with the brakes. I set it up properly but the brakes arent working. The light for the brakes is on, but the brakes are not engaging.
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Old 12-22-2006, 09:32 PM   #5
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Have you set the EPA on your transmitter large enough for it to take affect???
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Old 12-22-2006, 09:35 PM   #6
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EPA?
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Old 12-22-2006, 09:42 PM   #7
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Just to expand a little on one of the above replies, a diode is a one way gate for current. Current can go through one way (to the motor) but not the other (back to the ESC) when you brake the motor acts like a dynamo (generator) that will send current back to the ESC - creating heat, and in extreme situations will fry the ESC. In modified racing you typically run a diode since you brake, if your in a one-way situation like in rubber tire racing you really do not need a diode on the motor. If you use a lot of brakes in a high current situation use a diode, if not don't bother since it's just spending money on parts that you won't really use.
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Old 12-22-2006, 09:47 PM   #8
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EPA = End Point Adjustment, it adjusts how far the you want the brakes to travel
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Old 12-22-2006, 10:15 PM   #9
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nope. still not working.
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Old 12-22-2006, 10:49 PM   #10
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Try swapping servo and ESC channels on receiver. Then apply brake on radio to see if your servo is moving back. If it does then something is wrong with ESC. If servo doesn't move when brake is appied you need to adjust settings on radio. Once you get that to work then reswap plugs on receiver. Let me know what happens.
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Old 12-22-2006, 11:18 PM   #11
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Well... Something is wrong with the esc... And I just got it today
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Old 12-22-2006, 11:25 PM   #12
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Did the servo move when you applied brake?
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Old 12-22-2006, 11:50 PM   #13
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Quote:
Originally Posted by MK_Arbiter
I'm still pretty new to RC And I don't know what capacitors and schottky diodes do.
can i use them with a team orion method R motor?
Power Capacitors : To store some electrical energy and release it ( discharge ) when needed. In effect, capacitors smooth out electrical pulse discharge generated by high switching ESC on/off frequency ( 1KHz to 23KHz ). Lower frequency generate more punch. High freq generate smoothness and battery savings.

Schottky Diode : Ultra low loss diode. When motor is coasting ( free wheeling ) and Braking / Drag Braking, the motor will create its own voltage, and this generated voltage will be sent to schottky diode instead of going back to ESC. ESC will be much cooler now.

Motor Capacitors : to filter high frequency noises generated from motor arching. When motor at half or full power, you can see arching on the motor commutator and brushes. These arching create noises that creates radio interference ( glitching ).

Glitching : can be two things : (1). Radio interferences cause by other radio signal or motor noise or electrical cable noise. (2). Not enough power from ESC to Receiver. Receiver must feed continuous electrical power to servo, thus when receiver is out of power due to bad wiring or poor voltage power from ESC, Receivers will occasionally glitch. You can test " not enough power from ESC to Rcvr " by going full throttle and wiggle the steering servo couple of times. If it glitch, then you know what is the problem.
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Old 12-23-2006, 12:18 AM   #14
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THE SCHOTTKY the schottky will optimize the braking and motor performance in applications with heavy or repeated braking or low turn modified motors. POWER CAP helps to maintain cool and smooth operation. and with novak you got to have the power cap.
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Old 12-23-2006, 09:00 AM   #15
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Quote:
Originally Posted by Stratus Racer
Did the servo move when you applied brake?
Yea. The ESC senses the trigger moving to brake, but it doesnt initiate them.
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