1. I have a battery, a charger & a load as in ckt attached.
2. Have to glow led when charging happens. While charging current decreases while battery getting full.
Have conencted a small resistor in battery path whenever current will flow across it from charger to battrey, there will be drop across the resistor, which appears across opamp input. Since opamp is in open loop configuration even a small drop will saturate the opanmp & will glow led.
3. Will it work as intended? Havent tried in actual yet.
4. Most of time bothe charger and battery will be connected to load, once in a month mains may go then system shifts to battery.
Probem may arrise:
1. There is small vid diff due to offsets, so opamp may be saturating even if no current is flowing, so how to avoid this situation
2. Any other low cost solution based on voltage measurements or current measurement circuit will work only?
3. Low cost is must have, low power is better if available.
4. Any other better way to do that with/without cost constraints.
2. Have to glow led when charging happens. While charging current decreases while battery getting full.
Have conencted a small resistor in battery path whenever current will flow across it from charger to battrey, there will be drop across the resistor, which appears across opamp input. Since opamp is in open loop configuration even a small drop will saturate the opanmp & will glow led.
3. Will it work as intended? Havent tried in actual yet.
4. Most of time bothe charger and battery will be connected to load, once in a month mains may go then system shifts to battery.
Probem may arrise:
1. There is small vid diff due to offsets, so opamp may be saturating even if no current is flowing, so how to avoid this situation
2. Any other low cost solution based on voltage measurements or current measurement circuit will work only?
3. Low cost is must have, low power is better if available.
4. Any other better way to do that with/without cost constraints.
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