Showing posts with label code. Show all posts
Showing posts with label code. Show all posts

Friday, May 31, 2013

Pole Travel Trailer Connector Wiring Color Code

Trailer Wiring Harness on Trailer Wiring Electrical Connections Are Used On Car  Boat And
Trailer Wiring Electrical Connections Are Used On Car Boat And.


Trailer Wiring Harness on Standard Four Pin Wiring Harness
Standard Four Pin Wiring Harness.


Trailer Wiring Harness on Typical 7 Way Trailer Wiring Diagram   Circuit Schematic
Typical 7 Way Trailer Wiring Diagram Circuit Schematic.


Trailer Wiring Harness on Toyota Pickup  1995 2004 Tacoma Reese Trailer Wiring Harness  118379
Toyota Pickup 1995 2004 Tacoma Reese Trailer Wiring Harness 118379.


Trailer Wiring Harness on Trailer Wiring Connector Diagrams For 6   7 Conductor Plugs
Trailer Wiring Connector Diagrams For 6 7 Conductor Plugs.


Trailer Wiring Harness on Trailer Wiring Connector Diagrams For 6   7 Conductor Plugs
Trailer Wiring Connector Diagrams For 6 7 Conductor Plugs.


Trailer Wiring Harness on Above  Is An Instance Of The Dodge Harness Attached To A Wiring
Above Is An Instance Of The Dodge Harness Attached To A Wiring.


Trailer Wiring Harness on Wiring To Trailer S Wiring  Failure To Do So May Cause Damage
Wiring To Trailer S Wiring Failure To Do So May Cause Damage.


Trailer Wiring Harness on Way   7 Pole Rv Travel Trailer Connector Wiring Color Code
Way 7 Pole Rv Travel Trailer Connector Wiring Color Code.


Trailer Wiring Harness on Trailer Wiring Diagrams  Johnson Trailer Sales  Colfax Wisconsin
Trailer Wiring Diagrams Johnson Trailer Sales Colfax Wisconsin.


{ Read More }


Monday, May 13, 2013

Digital code lock

This is a simple but effective code lock circuit that has an automatic reset facility. The circuit is made around the dual flip-flop IC CD4013.Two CD 4013 ICs are used here. Push button switches are used for entering the code number. One side of all the push button switches are connected to +12V DC. The remaining end of push buttons 2,3,6,8 is connected to clock input pins of the filp-flops.

The remaining end of other push button switches are shorted and connected to the set pin of the filp-flops.The relay coil will be activated only if the code is entered in correct sequence and if there is any variation, the lock will be resetted. Here is correct code is 2368.When you press 2 the first flip flop(IC1a) will be triggered and the value at the data in (pin9) will be transferred to the Q output (pin13).Since pin 9 is grounded the value is “0” and so the pin 13 becomes low. For the subsequent pressing of the remaining code digits in the correct sequence the “0” will reach the Q output (pin1) of the last flip flop (IC2b).

This makes the transistor ON and the relay is energised.The automatic reset facility is achieved by the resistor R11 and capacitor C2.The positive end of capacitor C2 is connected to the set pin of the filp-flops.When the transistor is switched ON, the capacitor C2 begins to charge and when the voltage across it becomes sufficient the flip-flops are resetted. This makes the lock open for a fixed amount of time and then it locks automatically. The time delay can be adjusted by varying the values of R11 and C2

{ Read More }


IconIconIconFollow Me on Pinterest