Title: Air Conditioner Board CT1 Current Transformer Mutual Inductor Current Detection

Universal Air Conditioner Circuit Board CT1 Current Transformer Mutual Inductor Current Detection Current Transformer Coil

CT1 Current Transformer

It is actually a linear transformer, and its input current (detected current) 
and output current are proportional to the number of turns of its 
internal coil (both are the amount of alternating current).

The current output by CT1 produces an AC voltage drop on the R6 resistor. 
The voltage is rectified by the D10 switching diode and becomes a DC voltage V1. 
V1 divides the voltage between R14 and R13. 
The E6 electrolytic capacitor stabilizes the voltage V2 across the R13 resistor. 
It is sent to the A/D port of the chip for processing.

The calculation method of the voltage value of the chip A/D port is as follows:

V2=R13/(R13+R14)*V1=R13/(R13+R14)*(0.707*R6*Ii/C-0.5)

The purpose of the clamping diode D9 is to ensure that the analog input 
to the chip port is not greater than 5V to ensure the reliability of the chip; 
the resistor R12 and the capacitor C8 filter out the high-frequency 
components of the input and reduce its impact on the MCU.

Resistance of the coil: about 600 ohm

The Number(Brand) and Characters on the Unit,Have No Practical Significance,Just For Reference!
 
As long as they look the same or similar,they can be used for your device!
 
If Your Old Unit Part’s Dimensions and Appearance are the same it can works for you!

Please confirm from the specifications in the listing that if this item will be compatible with your device before you placing order.

If you have any inquiries or questions please don’t hesitate to contact us before purchasing,Thank you!

Package Included:

1x Current Transformer Coil

—-( Random Batch / Color / Type Will Be Sent Out As Default )