Knowledge

Functional understanding: it is a switch, single-pole double-throw, with a movable arm, just like the movable arm of a common knife switch. 8 is the active point, 5 is the normally closed point, when

The time relay is a very important component in the electrical control system. Generally, there are two types of power-on delay and power-off delay. From the principle of action, there are electronic,

Shielding can effectively suppress the electromagnetic interference propagating through the space. First, it can limit the radiation of electromagnetic energy generated inside; second, it can prevent

When the winding (inductive load) of the executive relay is switched on and off. There will be a series of electromagnetic oscillation radiation with high rise speed and high frequency and amplitude i

In actual use, the following methods are generally used to suppress and improve the anti-interference ability of its products. Use isolation transformers; select appropriate varistors; add high-freque

Time relays are widely used as automatic control devices, especially when there are many electrical equipment in the low-voltage electrical control network, the problem of electromagnetic interference

In the conventional Y-△ motor control circuit, the delay control of the time relay enables the motor to switch from the Y-shaped start to the △-shaped operation for effective control. Press the Y-△ co

In a word, the time-specific chip developed according to the working characteristics of the time relay has the advantages of multiple time base selection, convenient time preset, intuitive display, an

K3 is the working mode selection. When K3 is turned on, the working mode of the time relay is interval timing, that is, when the time relay is connected to the working power, the OUT output terminal o

The time setting can be set to "8, 4, 2, 1" of one, ten, one hundred, one thousand through the SA1, SA2, SA3, SA4 DIP switches to the chip register for comparison in the chip's internal comparison cir

The dedicated chips OSC1, OSC2, OSC3 are connected to external crystal oscillators and resistors to form a parallel crystal oscillator to generate a 32768Hz main pulse. P2, P3, P4 output the BCD code,

The special chip adopts CMOS technology, with low power consumption, strong anti-interference ability (internal hardware programming), external quartz oscillator, multiple time base options, and two w