Posted by Circuits Arena on Saturday, 17 January 2015
Battery Discharge Meter Circuit Diagram is the artlcle explaining Battery Discharge Circuit: Battery-life activity for a conveyable system may be a long task and plenty of strategies used for it don...
Battery Discharge Circuit:
Battery-life activity for a conveyable system may be a long task and plenty of strategies used for it don't offer reliable results. given here may be a circuit exploitation that you'll live the battery-life terribly simply. Here, associate analogue clock tracks the discharge time of the battery utilized in powered moveable devices.
Circuit and dealing
The circuit for battery discharge activity is shown in Fig. 1. it's designed exploitation low-power single-/dual-supply comparator MAX921 (IC1), MOSFET VN0300L (IRF1), associate analogue clock and a couple of alternative elements.
IC1 monitors the lifetime of the however (battery underneath test) and controls the ability offer for the analogue clock. once the however voltage falls below the brink price set by VR1, IC1’s output becomes low, that turns off MOSFET IRF1. This means, power offer for the analogue clock is discontinue then the clock stops running. The reading on the clock at now offers the discharge time of the however, provided you had set the clock to 12:00 before testing started. The circuit will check two.5V to 11V batteries.
Fig.Circuit diagram for battery-discharge Meter
After aggregation the circuit on PCB, enclose it in a very appropriate plastic box. Connect positive terminal of the analogue clock to positive terminal of a one.5V AA-size battery and negative terminal to the drain of MOSFET IRF1. Before victimization the circuit, verify that voltages at the take a look at points area unit as per table.
For setting the edge voltage, you would like a variable DC power offer at CON1. as an example, to live the discharge time of a 6V battery (BUT), initial decide its minimum threshold voltage, say 4.5V. Connect variable offer to CON1 and set it to four.5V. Vary VR1 until the clock stops running. Now, take away the variable power offer, set the clock to 12:00 and connect the 6V battery at CON1. Connect the load across the battery. because the battery power is being consumed by the load, voltage level begins to drop. once however voltage drops below four.5V, the clock stops running. The time shown on the analogue clock at now is that the discharge time.
