Saturday, December 3, 2016

Circuit Schematic Electronic Combination Lock using IC LS 7220

Robotronicdiagram. - This is one of electronic lock application circuit diagram for you that called with circuit diagram of Electronic Combination Lock using IC LS 7220 look like in Figure 1 below. The main component in this circuit diagram is LS 7220 IC and other components. 

In here we will show you also the component parts used and the simple description of this circuit diagram and the last we will give you link to read more about this circuit from original source. 

Circuit Diagram 

Component Part
  1. Push Button Switchs
  2. Resistors
  3. Capacitors
  4. LS7220 IC
  5. Header Posistion HD1
  6. Diodes
  7. Relay

Circuit diagram like in figure 1 above is Circuit Diagram Electronic Combination Lock using IC LS 7220. According Circuitstoday site describe that this is the circuit diagram of a simple electronic combination lock using IC LS 7220.This circuit can be used to activate a relay for controlling (on & off) any device when a preset combination of 4 digits are pressed.The circuit can be operated from 5V to 12V.

To set the combination connect the appropriate switches to pin 3,4,5 and 6 of the IC through the header.As an example if S1 is connected to pin 3, S2 to pin 4 , S3 to pin 5, S4 to pin 6 of the IC ,the combination will be 1234.This way we can create any 4 digit combinations.Then connect the rest of the switches to pin 2 of IC.This will cause the IC to reset if any invalid key is pressed , and entire key code has to be re entered.

Please read more this article from original source about circuit diagram of Electronic Combination Lock using IC LS 7220 using link Here.

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