Power Supply Board For 12v & 5v Projects
One of the important thing in project making is to design suitable power supply
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| Power Supply Board For 12v & 5v Projects |
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| Schematic |
PCB DESIGN
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Sunday, 23 September 2012
IR Remote Controlled Home Appliance
IR Remote Controlled Home Appliance
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| Schematic
Simple IR Remote Control
Connect this circuit to any of your home appliances (lamp, fan, radio, etc) to make the appliance turn on/off from a TV, VCD or DVD remote control. The circuit can be activated from up to 10 metres. The 38kHz infrared (IR) rays generated by the remote control are received by IR receiver module TSOP1738 of the circuit. Pin 1 of TSOP1738 is connected to ground, pin 2 is connected to the power supply through resistor R5 and the output is taken from pin 3. The output signal is amplified by transistor T1 (BC558). The amplified signal is fed to clock pin 14 of decade counter IC CD4017 (IC1). Pin 8 of IC1 is grounded, pin 16 is connected to Vcc and pin 3 is connected to LED1 (red), which glows to indicate that the appliance is "off".
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| CD 4017 |
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| TSOP 1738 |
PCB DESIGN
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| After Soldering the components to etched PCB.....In this I also made Extra IR Remote Using IC555 as Astable.......(Its not needed... u can use TV remote also) |
Simple Combination Lock
Simple Combination Lock
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| Schematic |
This circuit illustrates the use of XOR (Exclusive-OR) gates as bit comparators. Four of these XOR gates compare the respective bits of two 4-bit binary numbers, each number "entered" into the circuit via a set of switches. If the two numbers match, bit for bit, the green "Go" LED will light up when the "Enter" pushbutton switch is pressed. If the two numbers do not exactly match, the red "No go" LED will light up when the "Enter" pushbutton is pressed.
MATERIALS AND PARTS
- 4001 quad NOR gate
- 4070 quad XOR gate
- Two, eight-position DIP switches
- Two light-emitting diodes
- Four 1N914 "switching" diodes
- Ten 10 kΩ resistors
- Two 470 Ω resistors
- Pushbutton switch, normally open
- Two 6 volt batteries
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| IC 4001 NOR gate |
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| IC 4070 XOR gate |
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| DIP Switches |
Always use IC Base on PCB
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| IC Base |
PCB DESIGN
DOWNLOAD PCB DESIGN
Tuesday, 11 September 2012
7 segment Up & Down Counter
7 segment Up & Down Counter
schematic diagram
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| 7 SEGMENT DISPLAY my work table |
components:
IC 's:
NE555:-
74LS192:-
74LS247:-
7-segment Display( Common Anode ):-
Push button ( 2 pin ):-
Note: Always use IC base on PCB...
DOWNLOAD PCB DESIGN
CLICK THE LINK
https://rapidshare.com/files/2983823756/up & down counter 7 segment.pdf
https://rapidshare.com/files/3433516072/up & down counter 7 segment PCB.pdf
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| for extending purpose ,can use connectors |
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