CD4060 Timer Circuit 1 minute to 2 hours

 

CD4060 Timer Circuit 1 minute to 2 hours

This is a 1 minute to two-hour timer switch. The 14-stage binary ripple counter Type 4060, IC1, has an on-chip oscillator capable of stable operation over a relatively wide frequency range. In the present circuit, the oscillator frequency is determined by an external RC network connected to pins 9, 10 and 11.

PARTS LIST
R1	2.2MΩ
R2	18KΩ
R3	1KΩ
R4	1KΩ
R5	1KΩ
R6	1MΩ
VR1	500KΩ (504)
C1	220nF (224)
C2	10nF (103)
D1	LED
D2	LED
D3	1N4001
Q1	BC547
IC1	CD4060
RL1	Relay

When the power is on, the pulse at junction R6-C2 resets the counter and counting starts. When the counter reaches bit 14 (Q13), pin 3 goes high so that the relay, a 9V type, is turned on via driver Q1.

CD4060 IC PINOUT

The time delay is set with the aid of VR1. Time delays of between one minute and two hours are possible by appropriate dimensioning of the timing components:

1-30 minutes: C1 = 220nF ; VR1 = 500KΩ.
1-60 minutes: C1 = 470nF ; VR1 = 500KΩ.
1-120 minutes: C1 = 470nF ; VR1 = 1MΩ.

The timer is powered by a 9V PP3 battery. Light-emitting diode D1 does not affect the operation of the circuit and is included merely to show that the timer works. Diode D1 and resistor R4 are , therefore, optional components.

Class AB Transistor Power Amplifier Circuit Diagram

 

Discrete Class AB Transistor Audio Power Amplifier Circuit Diagram

This is a class AB transistor power amplifier. It is a simple amplifier to build, uses standard parts and is stable and reliable.  The entire circuit utilizes commonly available components and may be simply built over a general-purpose board. But this amplifier has very good sound quality.

There are eleven transistors, including four in the output stage. Q1 and Q2 transistor must be between 3 and 5  amperes power transistors. Q4 and Q5 must be between 100mA and 500mA driver transistors. Other transistors are 10mA small driver transistors. Q1, Q4 and Q2, Q5 are complementary pairs, they make complementary darlington pairs.

PART LIST
R1	1.5KΩ ¼W
R2	150Ω ¼W
R3	1KΩ ¼W
R4	0.22Ω 2W
R5	0.22Ω 2W
R6	39KΩ ¼W
R7	1KΩ ¼W
R8	120Ω ¼W
R9	6.8KΩ ¼W
R10	6.8KΩ ¼W
R11	47KΩ ¼W
R12	47KΩ ¼W
R13	2.2KΩ ¼W
R14	180KΩ ¼W
R15	18KΩ ¼W
C1	22pF Ceramic
C2	4.7µF 16V
C3	1000µF 25V
C4	100µF 25V
D1	1N4148
D2	1N4148
Q1	2SD313
Q2	2SB507
Q3	2SA733
Q4	2SB560
Q5	2SD400
Q6, Q7, Q8, Q9, Q10	2SA733
Q11	2SD400
LS1	4Ω 20W SPEAKER

Power output of the amplifier

Supply voltage (Vs)	= 20V
Speaker impedance (R)	= 4Ω
Peak to peak voltage (Vpp)	= 20-2 =18V
Peak voltage	= 9V
Maximum output (Pmax)	= 9V2/2R
	= 81/8
	= 10W

10W is much enough for the day today home usage.

Amplification of this amplifier (A)

A	= R6/R13+1
	= 39KΩ/2.2KΩ+1
	= 18

Volume control can be added to the circuit by connecting a 10KΩ  POT in series to the input of the amplifier.

Q1 and Q2 must be kept sufficiently cool, so it is mounted on a suitable heat sink. If you used single heat sink please use insulation between transistors and heat sink.

Transistor Amplifier Circuit Designer Software

TransistorAmp BJT Transistor Amplifier Circuits Designer Software

For the design of transistor amplifiers there is a new software available: TransistorAmp. With TransistorAmp you are able to create your individual transistor amplifier with a few mouse clicks. TransistorAmp is freeware.

The tool TransistorAmp has a very easy to use user interface. You start every design with the menu item “New Amplifier”. In the pull-down-menu you choose your desired circuit. You can choose between,

• common-base-circuit
• common-emitter-circuit
• common-collector-circuit

After that you get a dialog, where you have to put in all parameters of your amplifier.
For the selection of the transistor type you can click on the button “Select transistor type from list”, and you will see a list of all supported transistor types. TransistorAmp supports some thousand transistor types. Select your desired transistor type there and click on OK. The selected transistor type will then be displayed in the dialog.

When you have completed your input in the dialog, you click on OK and see the result. You see a window with your input data, the circuit, the component values and the most important parameters of the operation point. If you want to change your design, you only need to click again on “New Amplifier” and the circuit in the pull-down-menu. The input data, which have given will be restored to the input dialog, and you can change one or more parameters.
When you are satisfied with the result, you can click on “Result – Save”. TransistorAmp saves all data which is displayed in the result window to a HTML-file. You can open this file with a browser (e.g. Firefox or Internet Explorer), inspect it and print it.

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Digital Logic Circuit Design simulator Software

 

 

MultiMedia Logic Digital Circuit Design simulator Download

This multimedia logic simulator software is simplest, most powerful, most universal languages known (Digital Logic).  Most digital logic drawing systems are just that, drawing systems.  Recently, some logic drawing systems allow circuits to be activated as they are drawn for testing purposes.  But the input and output to these systems are typically files of numbers.  The MultiMedia Logic Simulator has taken this one step further and introduced devices that connect directly to your computers’ real devices (e.g. Keyboard, Screen, Serial Ports) including MultiMedia ones (PC speaker, Wave, Bitmaps).

The intent of this system is not to necessarily build the logic circuit you design.  The intent is to use what you build, to allow experimentation, to learn and to have fun.

This Complete installation kit for all 32-Bit Windows. (NT/2K/Xp/95/98/ME, VISTA, Windows 7)

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Coil Maestro Solenoid Inductance Calculator Software Download

OVERVIEW: Program calculates optimal dimensions of coils for wanted inductance. It is simple to use but flexible so it can help you not just to make calculations but to find optimal measures or experiment with very flexible parameters.

Aditionaly, program can calculate inductance based on physical dimensons of coil.

REQUIREMENTS: Any computer running Windows 95, Windows 98, Windows 95 NT, Windows 95ME, Windows 95 XP, Windows 2000, XP, Vista or newer will do.

INSTALLATION: There is no need for any special installation. Just run the EXE

USAGE: You should know some theory about calculating coils.

There ar two modes: optimal coil calculator and coil inductance calculator.

OPTIMAL COIL CALCULATOR isused when you have to make coil of known characteristics. It allows you to experiment with different coil parameters to get to the optimal values. If you set wide range of parameters, it will try to find most optimalby itself.

Default values will help you understand how application works. There is also drawing explaining what is meaning of each parameter. Some parameters are presented as range. You may use this range to force specific values for that parameters. If you want to limit range to single value, just set both min and max to the same value.

If you are not certain which range will do the best for wanted calculation, set large ranges. Calculation will take some time but it will give you some results. Our sugestion is to increase step value to cut the time. In that way you wil get rough caculation but, once you get it you will be aware what range you should set to get finer result.

COIL INDUCTANCE CALCULATOR helps you calcualte inductance od the coil which dimensions you know. It is helpful when you get unknown coil so you can only measure it’s dimensions.

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Transformer Calculation Software

 

Transformer Winding Calculation Software

Transformer Calculation v0.1 is program for calculating number of coils and wire thickness.

If you have some experience in assembling transformers, then this program is perfect for you.
If you don’t known anything about assembling transformers, please don’t use calculations from this program for building your own transformer!
Wrong calculation can do damage to your electric device attached to electric network, and IT CAN KILL YOU !!!
You can still use this program to determine how big EI core of transformer must be, if you plan to buy transformer. Note there are lot of transformers that are hybrids, so if you need transformer for amplifire buy right sized transformer. Hybrid transformer are ordinarily small and under high load it can overheat.

This program can calculate values only for standart transformer core, that’s “W” and “U” profile of core.
Toroid transformers (ring profile of core) and others aren’t supported.

Transformer IE core square dimension:

• Height and Width of core intersection.
• Maximum power of core.

Primary coil – parametars:

• Input voltge of transformer.
• Button for adding wanted voltage to list.
• List of selected input voltage.
• List of calculated input amperage.
• Current calculated power.

Secondary coil – parametars:

• Output voltge of transformer.
• Output amperage of transformer.
• Add/Change button for adding/changing wanted voltage and amperage to/in lists.
• List of wanted output voltage.
• List of wanted output amperage.

Coils, wire thickness:

• Input and output number of coils.
• Input and output wire thickness.

Transformer Calculation software

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Resistor Color Code and SMD Calculator Software

 

Resistor Color Code and Surface Mount Device (SMD) Calculator Software

Resistor Color Coder is a free desktop application that has been downloaded by hundreds of thousands of electronics enthusiasts.

4 or 5 band Leaded-Type Resistor Color Coder

This calculator quickly determines 4 or 5 band resistor values and tolerances. It can be used to encode resistance values into color codes, or to decode resistor color codes into resistance values.

Surface Mount Device (SMD) Markings Decoder

This SMD Markings Evaluator will decode 3 marking types:

• Standard 3 or 4 digit markings that can include “R” to indicate a decimal point.
  Examples: 330 3R3 4703
• EIA-96 1% markings with a number in the range 01 to 96, followed by a letter
  Examples: 22A 68C 02F
• 2, 5, and 10% markings with a letter, followed by a numbers in the range 01 to 60
  Examples: A22 C58 F59

E-Series Standard Resistance Values

Standard resistor values are listed for E-12, E-24,
E-48, E-96 and E-192 Series.

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PIC Programmer

 

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PIC Programmer

PIC Programmer Circuit diagram

Following uJDM PIC programmer  circuit is a circuit which suitable to do simple pic16f84, pic16f84A, 16c84, 16f628 group programmer.

PARTS LIST
R1	10KΩ
R2	3.3KΩ
R3	15KΩ
C1	100µF 16V
D1	LED
Z1	5.1V Zener
Q1	BC547
PIC	PIC16F84,PIC16F84A, 16C84, 16F628
Rs232	RS232 Femail Connector
IC Base	18 pin ic base for PIC

BC547  Transistor Pin Configuration

• Using IC base for PIC
• Connect the PIC programmer to 1st or 2nd COM PORT of computer by using RS232 wire.
• USE MPLAB AND IC-PROG (or any ic programming software) to program PIC with this PIC Programmer.

PIC16F84A Micro Controller

PIC PROGRAMMER

PIC 16F84A Programmer

• IC Prog settings for PIC programmer and programming PIC using .HEX file

 

PIC 16F84 12 24 Hour Digital Clock Circuit And Programming

PIC16F84 12 or 24 Hour Digital Clock Circuit Diagram And Programming

This PIC digital clock is based on a 16F84 microcontroller. it uses four 7-segment displays.The software in the microcontroller allows for very accurate timekeeping.

PARTS LIST
R1 – R8	100Ω
R9	10kΩ
R10 R13	10kΩ
C1	22pF
C2	22pF
D1	LED
U1 – U4	Common Cathode 7 Segment Display
Q1 – Q4	C828
Xtal1	4 MHz Crystal
IC1	7805 Regulator IC
PIC1	PIC 16F84 OR PIC16F84A
PB1 -PB3	Push to ON push button switch

PB1 for set minutes.

PB2 for set hours.

PB3 for Reset.

D1 LED indicate seconds.

Notes:

• Design this circuit diagram on veroboard or pcb using 18 pin IC base.
• Program your PIC (pic16f84 or pic16f84a) using PIC Programmer with ic-prog programmer software and this .HEX file. You can follow these instructions.
• Install PIC on IC base.
• Supply power to your circuit and set time using PB1 and PB2.

Thats all.

PIC16F84 Pin Configuration

Also provided asm files, so you can develop or modify this clock circuit.

Download digital clock asm and hex files.

 

PCB Designer

 

PCB Designer Software

PCB DESIGNER is everything you need to design…. easy to use….
Easy to use.
designing circuit boards is simple for the beginner and efficient for the professional.

 

PCB Designer Software

PCB DESIGNER is everything you need to design…. easy to use….
Easy to use.
designing circuit boards is simple for the beginner and efficient for the professional.

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Please send your ideas, which are very important for our success…

555 Timer Design Calculator Software

This software helps for calculating component values of 555 timer circuits.

Features

• 3 astable modes
• monostable (one-shot) mode
• duty cycle indicator
• can tweak R & C values

Astable – Duty cycle > 50%

Astable – Duty cycle = 50%

Astable – Duty cycle < 50%

Monostable (one-shot)

You can adjust Frequency, Duty Cycle and R1, C1 through this software.

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