About Electric bicycle and LM339

How Lm339 comparator work in electric bicycle

  • Function of LM339

    Votes: 1 100.0%
  • It's characteristics

    Votes: 1 100.0%

  • Total voters
    1

Thread Starter

rutu4862

Joined Mar 24, 2018
5
Sir,
I want details about how LM339 use in E Electric bicycle


Mod note: moved from embedded systems
 
Last edited by a moderator:

dl324

Joined Mar 30, 2015
12,244
Welcome to AAC!

Can't tell without a schematic showing how it/they are being used.

Comparators are best used to compare signals, but they can be used as amplifiers in some cases.
 

Thread Starter

rutu4862

Joined Mar 24, 2018
5
It's schematic not available but it is used in e bicycle
Which consist PMDC motor of 12V
It changes by a toggle switch which connect to microcontroller kit
At 1 condition PMDC act as motor
While paddling of cycle stop motor get power from battery
When toggle changes 2 condition it act as generator we need to paddling cycle
Battery start to charge
 

dl324

Joined Mar 30, 2015
12,244
It's schematic not available but it is used in e bicycle
Which consist PMDC motor of 12V
It changes by a toggle switch which connect to microcontroller kit
At 1 condition PMDC act as motor
While paddling of cycle stop motor get power from battery
When toggle changes 2 condition it act as generator we need to paddling cycle
Battery start to charge
This information isn't helpful. There is more than one e bicycle design and they wouldn't have to use the same circuitry.
 

Alec_t

Joined Sep 17, 2013
11,799
It could be used as part of a PWM circuit for controlling motor speed, or it could be part of a circuit monitoring battery charge/discharge. Or it might be part of a horn-sounding circuit:D. Or ........ who knows?
 

wayneh

Joined Sep 9, 2010
16,513
View attachment 149028 this is the controller fkt
I didn't understand how LM339 work in this
It is purchased on amazon
Have you read the data sheet for the LM339? This will tell you a lot about the device and its likely functions in your application.

But understanding what a component does tells you very little about the larger circuit. It's like picking a word out of a book. You can look up the definition but that won't tell you much about the book.
 

Thread Starter

rutu4862

Joined Mar 24, 2018
5
Have you read the data sheet for the LM339? This will tell you a lot about the device and its likely functions in your application.

But understanding what a component does tells you very little about the larger circuit. It's like picking a word out of a book. You can look up the definition but that won't tell you much about the book.
Yes I read data sheet
From that I understood that this IC is used as comparator
 

Thread Starter

rutu4862

Joined Mar 24, 2018
5
It could be used as part of a PWM circuit for controlling motor speed, or it could be part of a circuit monitoring battery charge/discharge. Or it might be part of a horn-sounding circuit:D. Or ........ who knows?
Ya hopefully I read data sheet from that I understood that this IC is used as comparator
 
Top