Resistor Chip Arrays
Product name: CD4511 8-way digital display answering kit
Product model: JS-56-2
Working voltage: DC5V
PCB size: 89 * 65mm
Description:
The circuit of the preemptive answering device can carry out eight-way preemptive answering at the same time. After pressing the key, the buzzer will sound, and at the same time (nixie tube) will display the number of the first responder. After the answer is successful, press the key again, and the display will not change unless you press the reset key. After resetting, the display will be cleared, and you can continue to answer. SB1~SB8 are the answer keys; SB9 is the reset key; CD4511 is an integrated circuit with BCD-7 segment latch/decode/drive circuit, in which 1, 2, 6 and 7 are the input end of BCD code, 9 to 15 pins are the display output end, and 3 pins (LT) are the test output end. When "LT" is 0, the output is all 1, 4 pins (BI) are the blanking end, when BI is 0, the output is all 0, and 5 pins (LE) are the latch allowable end. When LE changes from "0" to "1", the output end maintains the display state when LE is 0. Pin 16 is positive for power supply, and pin 8 is negative for power supply. 555 and peripheral circuits form the voice circuit of the answering machine. The whole circuit can use 7.5V-9V DC power supply.
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Type : Voltage Regulator
Origin : Mainland China