10 Watts Mosfet Audio Amplifier

The diagram shown here is a MOSFET amplifier circuit 10W of sound that only requires a single source. Single railway material rarely used in power amplifiers class-B. However, for low power applications like this is very thin. Actually I have this circuit a old cassette player is still working and republish as it is. The BD512 and BD522 power MOSFETs is obsolete now and you can use any other power MOSFET game instead of them.



Transistors Q1 and Q2 are connected as a Darlington pair works as a preamp. R3 preset controls the quiescent current, while R2 provides. Output is coupled to the speakers through capacitor C4. Capacitor C5 is the power supply filter and C2 is the input DC decoupling capacitor.

Notes.

• The circuit can be assembled on a vero board.
• Use 30V DC for powering the circuit.
• Do not expect much performance from this amplifier.
• Capacitors C3, C4, C5 must be rated 50V and C2 can be 10V.
• Use a 8 ohm 15W speaker as load.

Read more →

Altium Designer 10 0 – Free Download

A unified electronic product development solution Altium Designer is the world’s first and only unified electronic product development system that allows engineers to take a design from concept to completion within a single application.

Don’t limit your design horizons. Get yourself out of the traditional design box and into holistic design. Use all the available technologies and devices to bring your ideas to life and turn them into the smart, connected products that we’ll all be using tomorrow.

Altium Designer 10.0

That’s what Altium Designer is all about – freeing you from the constraints of traditional design limitations and the old “divide and conquer” approach. Altium Designer provides one single unified solution for the entire design process. It allows you to explore and do more, do it in new ways, and design things that haven’t even been thought of yet. Think and design beyond the confines of the device itself and start designing your customer’s total product experience.

That’s next-generation electronics design. That’s Altium Designer.

The entire product development process with a single unified design solution A single solution to develop hardware, programmable hardware and software Take designs from concept to manufacture within a single unified environment A single model of the design data, and a single design data storage system

Freely explore design concepts ‘on-the-fly’ Explore devices from different vendors with minimal design reengineering Easily explore design concepts and options before committing to final hardware Use IP from any source, without being restricted to vendor-specific ‘sticky IP’

Rapidly prototype using a live, interactive hardware development system Develop, explore and debug designs on real hardware, in real-time with ‘LiveDesign’ Harness the full potential of reprogrammable devices with soft-centric design Change software and hardware with equal ease and on-the-fly

Smooth the path from design to board layout and manufacture Single centralized data source simplifies version control and component management Visualize and interact with board designs in real-time 3D, within the PCB editor Seamless collaboration with MCAD designers and other engineering teams

Easily connect to wider company systems Single access point for all design data simplifies links for data management systems Plug-in capability and built-in interfaces for external data management All involved in product development process access one design environment

Be equipped for the future with the latest design technologies Expand existing skill sets while harnessing the latest devices and techniques Make soft design and the creation of device intelligence the focus of design Immediately access new technology through consistent and frequent updates

Be productive right ‘out-of-the-box’ All tools and technologies in the box, including parts libraries and royalty-fee IP No need to purchase costly add-ons to make a complete solution Continually updated with latest devices and technologies

See Whats new in release 10

more info @http://www.altium.com/Products/AltiumDesigner/

Download

Part 1

Part 2

Part 3

Read more →

Timer with about 10 minutes

Applications of 555 timer IC is very diverse, one series of 10 Minute Timer with IC 555. 10 Minute Timer This circuit uses IC NE555 is set as a monostable multivibrator. The timing of the timer circuit 10 minutes with the IC 555 is governed by the configuration of C2, R4 and R5. The greater the value of C2 at 10-minute timer circuit with IC 555 timer is active then the time will stay longer. 

Total resistance value between R4 and R5 also determine the active circuit 10 minute timer with IC 555, where the greater the value the longer time was also active. The core active setting the timer on the set of C2 charging time for 10 minutes on the timer circuit with IC 555. So, with the value of C2 remain so with time on the circuit timing Timer 10 minutes by IC 555 can be set by changing the resistance value R 4 + R 5. Indicators of active timer at 10 minute timer circuit with IC 555 uses the LED D2 and D3 will light up only one course to identify the active timer and the timer has not been met.

Figure 10 Minute Timer circuit with IC 555

Description:

S1 is used to set / reset timer

R5 is used to set the timer to the desired time

Read more →