Electronic Float

We are a trustworthy Manufacturer and Supplier of Electronic Float, based in India. Electronic Float can be used with many mechanical floats. The electronic shaft connected to the mechanical float rotates as the float rotates. The rotation of the shaft makes the circuit to switch on ten LEDs connected to the ten outputs of linear voltage display IC1, which indicates the position of rotation of the shaft. The lowest LED D10 lights when rotation is at minimum level. As the rotation increases other LEDs glows one by one. When the rotation reaches 90^o, the uppermost LED D1 illuminates. Thus by varying this electronic shaft from 0 to 90^o, we can have ten indications for span of each 10^o.
About the Circuit :

• The operation of the circuit is based on linear voltage display IC1, which consists of 11 op-amps as comparators connected internally. The input of IC1 is directly derived from the battery voltage via potential divider R4-R5-P1-P2. This variable input is about 3V for battery potential of 12V. The display range depends on the internal voltage reference and resistors R1-R3.
• When pot P1 is at minimum position, the first op-amp of IC1 gets triggered and LED D10 glows. As the P1 varies from 0 to 90^o, op-amp gets triggered sequentially and LEDs D10 to D1 glows one by one or in dot mode. You can see the display in bar mode also through toggle switch S2. When S2 is ON all ten LEDs glows and turns off one by one as P1 varies.
• The circuit requires a DC power supply of 12V and the current consumption is about 30mA.