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 NXP Semiconductors

  • Poultry Feed Controller Timer Circuit

  • Created: Dec 03, 2014

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The feed controller timer circuit is designed to alarm when the feed line runs over a certain time. This will help prevent damaging the automatic feeder when it is out of feeds. The device uses 74LV4060 low-voltage Si-gate CMOS device and is pin and function compatible with the 74HC/HCT4060. The 74LV4060 is a 14-stage ripple-carry counter / divider and oscillator with three oscillator terminals (RS, RTC and CTC )ten buffered outputs (Q3 to Q9 and Q11 to Q13) and an overriding asynchronous master reset (MR).

The circuit basically consists of two stages, the upper transistor latch stage, and the lower IC 4060 timer stage. Initially when power is switched ON the IC 4060 circuit is held switched OFF since the BC557 transistor is unable to conduct. The two transistors BC547 and BC557 are configured in the form of a simple latch circuit. The MIC is placed such that it is able to sense the vibrations of the poultry feed mechanism as soon as it activates. When the vibrations are picked, the MIC allows an instantaneous pulse to enter the BC547 transistor activating it for a fraction of a second. The above conduction of the BC547 in turn activates the BC557 latching the stage via the feedback resistor from the collector of BC557 to the base of BC547. Once latched the IC is allowed to receive the required supply voltage for its operations. The IC immediately starts counting and after a predetermined time period set by the 1M pot, pin 3 of the IC becomes high which latches the IC via the diode to pin 11. The process actuates the connected buzzer which begins alarming regarding the lapsed time. The circuit can be reset for repeating the cycle by switching OFF the power and switching it back ON. In case only the IC is required to be reset, the given "reset switch" may be utilized.

Poultry feed controller timer circuit benefits poultry houses in providing convenience in feeding the chicks on time without causing damage to the equipment. The device can also be used not only as poultry feed controller but also to any other electronic devices that needs a timer to optimized its function.