Hi,
I made circuit following directions from this link http://www.circuitstoday.com/battery-charging-indicator-circuit
I needed indicator for battery charger on my Bosch cordless drill/driver, because I want to know when the battery is charged.
It says that charger operate on 12V and the current is 400mA, but when measured voltage is near 18V when no battery is inserted, and don't know for the current.
The problem is, when circuit was finished and all plugged in, the IC burn out.
Does anybody have any idea?
Thanx.
I made circuit following directions from this link http://www.circuitstoday.com/battery-charging-indicator-circuit
I needed indicator for battery charger on my Bosch cordless drill/driver, because I want to know when the battery is charged.
It says that charger operate on 12V and the current is 400mA, but when measured voltage is near 18V when no battery is inserted, and don't know for the current.
The problem is, when circuit was finished and all plugged in, the IC burn out.
Does anybody have any idea?
Thanx.