3.7v Battery Low Full Indicator Ciruit

In this project 3.7v Battery Low Full Indicator Ciruit, we’re going to make a very easy battery level indicator. This indicator circuit is for a three. 7 volts indicator. We’ve got designed this circuit with few additives at home with easily to be had additives. Those additives can either be gathered from an vintage circuit or can be purchased from an electronics save effortlessly. 

3. 7v battery low full indicator

components required for three. 7v battery degree indicator
transistor – bc547 x1
resistor – 1k x2
resistor – 220 ohms x3
pn-junction diode – 1n4007 x1
led – 3v x2 (purple for low fee indication and green for full rate indication)
battery – three. 7v and 3v
step 1. First, connect 1k resistor to the base and emitter pin of the transistor as shown within the picture given below.

3. 7v battery stage inidicator

step 2. Inside the second prevent solder 220-ohm resistor to the collector pin of the transistor as shown in the picture.

Three. 7v battery degree inidicator

step 3. On this step connect 1 kilo-ohm resistor with the second factor of the 220-ohm resistor.

Three. 7 v battery low full indicator

step 4. In step four connect diode in4007 with the base point of the transistor as we have linked in the image given underneath. Connect the cathode factor of diode with the base factor of the transistor.

Three. 7 v battery complete low indicator

step 5. Connect – factor of inexperienced led with diode – point and +ve factor of led inexperienced led with 1k resistor as shown under.

Three. 7v battery degree indicator machain

step 6. Solder – point of purple led to -ve factor of the diode and + point of red led with collector factor of the transistor as we have proven in the diagram given underneath.

3. 7v battery stage indicator

checking out
our circuit has been finished now we check it by way of connecting the battery. Connect +ve of 3. 7 volts battery to +ve factor of green led and – factor of three. 7v battery to emitter factor of the transistor as we have linked within the circuit given beneath.3.7v Battery Low Full Indicator Ciruit,

Three. 7v low complete indicator

when you will join three v battery then purple led will glow absolutely if the battery will be low. Green led glows whilst the battery can be charged above 3. 2v. Its tested circuit its complete construction factors may be seen in the video given below.