CrazyEngineers Forum - Electrical & Electronics Engineering |
- Rechargeable battery charging
- power amplifier- pls help me
- What's the latest after 3G & 4G? Is there anything like 5G?
- Pin,Block diagram required
| Posted: 02 Dec 2010 11:03 PM PST Hi, What will the charging current do after the laptop battery is 100% charged? I do understand that the battery will no longer be charged. Conservation of energy states that energy cannot be destroyed. So what happens to the electric energy? Where will it go after 100%? |
| Posted: 02 Dec 2010 06:47 PM PST Hi! I'm currently trying to amplify the power so that the power from my digital to analog converter can turn/ drive my motor using LM675 as in the first page of this datasheet: http://www.national.com/ds/LM/LM675.pdf I just replaced the RL with my motor, but how can I: 1. Set the gain of the power amplifier? Is it by changing the 20k resistor only? 2. How can I know/ verify what is the power amplifier gain without having to measure the voltage & current? 3. How to limit/reduce the amplified power so that it is not excessive or will not damage my motor? 4. I'm trying to make the motor to turn in both cw and ccw directions, but after implementing this amplifier as in page 1 of the datasheet, it only turns cw. How can I make it turn in both direction? I have a dual power supply. Do I need to use the circuit as in page 8 "Servo Motor Control"? If yes, how can I set the amplifier gain? Is it by changing the 1M resistor only? Sorry if my questions sound stupid/ very basic. Thanks |
| What's the latest after 3G & 4G? Is there anything like 5G? Posted: 02 Dec 2010 11:49 AM PST Just thought of keeping my knowledge updated. I've heard that couple of network providers in the USA are already offering 4G services and download speeds up to 6-8 mbps. As far as I know, 4G services offer speeds upto 100 mbps. Is there something like 5G being worked on at present? If anyone knows, please post information about it in this thread. If 4G is the limit, what's next? |
| Posted: 02 Dec 2010 10:57 AM PST hello everyone. can anyone please give me the link to the pin diagram and block diagram of ADSP's Blackfin-BF537 processor. it will be of great help. thanks in advance |
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