Automatic On Off Switch For Water Pump Circuit Diagram

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Programmed Water Pump Controller

Here’s a programmed water siphon controller circuit that controls the water siphon engine. The engine gets naturally exchanged on when water in the overhead tank (OHT) falls underneath as far as possible. So also, it gets turned off when the tank is topped off. Worked around only one NAND entryway IC (CD4011), the circuit is basic, reduced and conservative. It works off a 12V DC power supply and devours next to no power. automatic on off switch for water pump circuit diagram

The circuit can be separated into two sections: controller circuit and pointer circuit.

Programmed water siphon controller circuit

Fig. 1 demonstrates the controller circuit. Give us a chance to consider two reference tests ‘An’ and ‘B’ inside the tank, where ‘An’ is as far as possible test and ‘B’ is as far as possible test. The 12V DC power supply is given to test C, which is the utmost for least water consistently put away in the tank.

As far as possible ‘An’ is associated with the base of transistor T1 (BC547), the gatherer of which is associated with the 12V power supply and the producer is associated with transfer RL1. Transfer RL1 is associated with stick 13 of NAND door N3.

So also, as far as possible test ‘B’ is associated with the base of transistor T2 (BC547), the authority of which is associated with the 12V power supply and the producer is associated with pins 1 and 2 of NAND door N1 and ground by means of resistor R3. The yield stick 4 of NAND door N2 is associated with stick 12 of NAND entryway N3. The yield of N3 is associated with info stick 6 of N2 and the base of transistor T3 by means of resistor R4. Hand-off RL2 associated with the producer of transistor T3 is utilized to drive the engine.

Circuit task

On the off chance that the tank is filled underneath test A, transistors T1 and T2 don’t lead and the yield of N3 goes high. This high yield stimulates hand-off RL2 to drive the engine and it begins siphoning water into the tank.

At the point when the tank is filled above test A however underneath test B, water inside the tank gives base voltage to drive transistor T1 and transfer RL1 empowers to make stick 13 of door N3 high. Nonetheless, water inside the tank does not give base voltage to transistor T2, so it doesn’t lead and the rationale worked around NAND entryways N1 and N2 yields low to stick 12 of door N3. The net impact is that the yield of N3 stays high and the engine keeps siphoning water into the tank. automatic on off switch for water pump circuit diagram

At the point when the tank is topped off to test B level, water inside the tank still gives base voltage to transistor T1 and transfer RL1 invigorates to make stick 13 of entryway N3 high. Simultaneously, water inside the tank likewise gives base voltage to drive transistor T2 and the rationale worked around NAND entryways N1 and N2 yields high to stick 12 of door N3. The net impact is that the yield at stick 11 of N3 goes low and the engine quits siphoning water into the tank.

At the point when water level falls beneath test B however above test A, water inside the tank still gives base voltage to transistor T1 and transfer RL1 remains stimulated to make stick 13 of entryway N3 high. Be that as it may, transistor T2 doesn’t direct and the rationale worked around NAND entryways N1 and N2 yields high to stick 12 of N3. Therefore, the yield of N3 stays low and engine stays ceased.

At the point when water level falls beneath test A, the two transistors T1 and T2 don’t direct. NAND entryway N3 gives a high yield to drive hand-off RL2 and the engine restarts siphoning water into the tank.

Pointer

Fig. 2 demonstrates the pointer/observing circuit. It comprises of five LEDs, which shine to show the degree of water in the overhead tank. Since 12V power supply is given to water at the base of the tank, transistors T3 through T7 get base voltage and lead to illuminate the LEDs (LED5 down through LED1).

At the point when water in the tank arrives at the base at level C, transistor T7 behaviors and LED1 shines. At the point when water level ascents to one-fourth of the tank, transistor T6 behaviors and LED1 and LED2 shine. At the point when water level ascents to half of the tank, transistor T5 behaviors and LED1, LED2 and LED3 sparkle. At the point when water level ascents to three-fourth of the tank, transistor T4 behaviors and LED1 through LED4 gleam. At the point when the tank is full, transistor T3 behaviors and all the five LEDs gleam. In this way, from gleaming of LEDs, one can realize water level in the tank (see the table). The LEDs can be mounted anyplace for simple observing.automatic on off switch for water pump circuit diagram

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