Crest Technology... Creative Electronic Systems Technology
Author: crestech
Crest Technology formerly a division of SCOPE T & M Pvt Ltd, is pioneer group in developing and delivering speciality Test and Measuring solutions for Power Sector, Metro & Railways, Automotive and General Industry and Test Labs.
In house design and prototyping skills, in analog, digital and embedded technology, coupled with a software development team for development of communication and control solutions to run under windows environment allows Crest to offer solutions which are in a class by itself.
Crest has its own manufacturing facilities, an interactive sales force and a dedicated field support team. Traceability to National standards is a part and parcel of all systems manufactured by Crest, through its modern a well maintained calibration standards and setups.
Crest technology provides services including Circuit Breaker testing,Automated Test Equipments ,Battery Cycle Life Tester ,Temperature Data Logger, PMDC Motor Testing ,Automotive Air Conditioner Console Testing ,electronic test equipment,circuit breaker testing equipment,electronic test equipment and Automotive Relay Testing
Keywords are: circuit breaker testing, temprature data logger, Battery Cycle Life Tester, Relay Testing, PMDC Motor Testing, Machine Vision, A c control panel testing, test solution in pune, crest technology Pune
Keywords are: circuit breaker testing, temprature data logger, Battery Cycle Life Tester, Relay Testing, PMDC Motor Testing, Machine Vision, A c control panel testing, test solution in pune, crest technology Pune
For more information please visit: http://crestech.co.in
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Crestech
Can I use a lutron control (rotary dimmer) with a dc motor?
For a simple way to control the rpms on a pm dc motor that was pulled from an old treadmill could I use a rotary dimmer or lutron control for that purpose? The motor says it pulls 2089 watts at max capacity and the lutron control is rated for 600 watts so could i put a capacitor and rectifier in between and safely do this without burning my motor up if the control fails?
I read something about this once but have no details and no clue if this will indeed work or be safe.
Thanks
EDIT – I should add that this motor is 2.8 HP and is overkill for what I need it for but its all I have so I am not concerned at all about lowering the current and losing HP.
Thanks again
wow second edit – DIdnt mean to include a capacitor in my original description. Obviously I want the lutron control to control the current.
Obviously 2089 is much larger than 600, so NO.
.
Your first problem is getting 2600rpm.
You will have to ‘gear up’ the windmill output shaft considerably, therefore you need a ‘high torque’ design of windmill. (MOST big wind generators only turn at 5-20 rpm, and use specially wound alternators (on geared up shafts) to put out larger amounts of power.
You would be better off using a ‘low rpm’ alternator. (They only need 1500 rpm to put out 100 amps at 12 volts which = 1200 watts, but ONLY when running at that speed. Since the wind speed is a variable, you can figure the ‘average’ output at about 1/2 that amount on a ‘good’ day.
the dimmer switch is probably your best bet.
but make sure it’s rated for 2500 – 3000 watts.
however, you might check the motor.
sometimes there are multiple leads, so that more, or fewer coils are used to change the speed.
interestingly, the fewer coils used, the faster the motor.
that’s because, with less resistance, the current is greater, and the speed is greater.
when i use such motors, i try not to use the highest rated speed.
that limits the total amount of current, and should make whatever it is last longer.
No, your power requirement is 2.5W, where as the motor you are proposing is 1.25W
What battery do I need for a 90 vdc gear motor?
Here are the specs on the motor I’ve got
PM DC Gear 90 vdc input hp 1/30 full load amps 0.35 47 rpm 26 lb full load torque
What battery do I need to get it fully powered? Also, how do I turn it on and off with a switch? AND, how do I incorporate the dc speed control that I’ve got?
You need 90 volts worth of batteries. For example, you could use 7 12 volt lead acid batteries to get 88 volts, close enough. You can buy 90 volt batteries, but they are expensive and won’t last long.
If you don’t know how to wire in a simple switch, you should find a different project, 90 volts is lethal and you will probably not survive this.
.
electric motor speed controller question?
I have a motor and the speed controller from an old treadmill and the speed is controlled digitally via a big, bulky board that would normally sit on top of the treadmill. It works on .5, 1, 2, etc mph increments.
What do I need to buy or what should I be researching in order to replace the digital controller with an analog controller for the actual speed controller? I have heard mention of a pot and I am aware of what it is but no clue of what I need to purchase.
I have built a hobby project that uses the speed controller, motor and digital board to set the speed but I can never get the speed quite right because I can only choose from 1, 2, 3, etc mph. Plus it is bulky.
The motor specs:
PM DC Motor
2.8 HP Peak
1.75 Cont HP
P/M M-215392
Not sure if that info will help but I thought I would give it a shot.
Thanks
i want to lift a weight of 5kg up to a height of 50cm within 10 seconds, which dc motor and battery should i u?
i m making a tower crane, and i need to lift a weight of 5 kg up to a height of 50 cm within 10 sec. and i need a dc motor with proper gear assembly and also a battery (maximum voltage limit is 24 volts, i can use less than 24 volts) and there is no current specification.
please suggest which one suits the most with its specifications and also prize.
its very urgent, i need a solution before 3:00 pm.
can the motor of 45 or 60 rpm with torque of 20 kg-cm help me for this?
Wind mill DC Motor?
I want to make a small wind mill just to see if I can really make my own power. I realize that this motor will not produce much but, can anyone tell me what output I could expect from a 12volt DC, 14 amp, 2600 rpm, 1/4hp, class 1, group D, PM fielded motor, in a windmill application???