60W MOSFET Amplifier

To celebrate the hundredth design posted to this website, and to fulfil the requests of many correspondents wanting an amplifier more powerful than the 25W MosFet, a 60 - 90W High Quality power amplifier design is presented here. Circuit topology is about the same of the above mentioned amplifier, but the extremely rugged IRFP240 and IRFP9240 MosFet devices are used as the output pair, and well renowned high voltage Motorola's transistors are employed in the preceding stages. The supply rails voltage was kept prudentially at the rather low value of and - 40V. For those wishing to experiment, the supply rails voltage could be raised to and - 50V maximum, allowing the amplifier to approach the 100W into 8 Ohm target.

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iPOD - MP3 Player Charger MC34063

Portable iPod charger that you can use while away from your computer. The circuit is based around an MC34063 switchmode regulator. This has high efficiency so that there is very little heat produced inside the box, even when delivering its maximum output current. The circuit is more complicated than if we used a 7805 3-terminal regulator but since the input voltage could be 15V DC or more, the voltage dissipation in such a regulator could be 5W or more at 500mA. and 5W is far too much for a 7805, even with quite a large heatsink.




TFC718            AO3401          78M05            JRC4558            AT24C02

The radio frequency receives and dispatches the circuit NRF24L01

NRF24L01 can work in 2.4 GHz- 2.5 GHz ISM frequency band, function module such as this transceiver built-in frequency synthesizer, power amplifier, crystal oscillator, modulator, it is a sincere integrated level more high wireless transceiver. Outside of nRF24L01 circuit relatively simple, and merged enhanced ShockBurst technology, among them output power and communication channel can carry on the disposition through the procedure. Meanwhile, power consumption of chip this extremely low, when not launching with power of 6 dBm, working current its only 9 mA; While receiving, there is only 12.3 mA in the working current. The controlling circuit of nRF24L01 can link with mouth of SPI mouth and GPIO of STM32 control device. It is that the constituent radio frequency of this chip receive and dispatch the schematic circuit diagram that image shows.




MC34063          ULN2003         2N3906          74HC595           TDA2822

Led light based music circuit with LM3914

This is a simple light running circuit by music This circuit is not difficult, is MONO, with a few accessories. Can be connected to the output of a CD or cassette player Time. 

Operation of the circuit. Begins to be input via VR. The VR will function fine, signal strength coming. D1 will take disconnected hemisphere plus leaving only the signal hemisphere removed to activation of Q1. Signal is extended through Q1 to pin 5 input of IC1. By C1 forward delay of the IC is not the LED (connected to the output. of IC1) off immediately. The IC IC1 is finished. The act shows the effect of the voltage at IC1 pin 5 of the display by the LED to pins 1-19 of the IC, which is within range. compared to a multiple voltage standard circuits. The circuit can operate effectively. In the R1 that it will determine the current flowing through the LED. To prevent LED damage.

Use should be connected to the input of the circuit. To the speaker terminals, change the value of R3 is 10k and IC1 can choose to display two types Bar (Bar) when the pin 9 and a power source. Dots (Dot) on 9-pin to float to drop.

LM3914         A1015           DS18B20           ICL7107           NE5532

 

 

ULN2003AN high-voltage, high-current Darlington transistor array

The ULN2003AN is a high-voltage, high-current Darlington transistor array. It consists of seven npn Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads.

ULN2003AN absolute maximum ratings: (1)Collector-emitter voltage: 50 V; (2)Clamp diode reverse voltage: 50 V; (3)Input voltage, VI: 30 V; (4)Peak collector current: 500 mA; (5)Output clamp current, IOK: 500 mA; (6)Total emitter-terminal current: -2.5 A; (7)Operating free-air temperature range, TA: -20℃ to 70℃; (8)Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: 260℃; (9)Storage temperature range, Tstg: -65℃ to 150℃.

ULN2003AN features: (1)500-mA-Rated Collector Current (Single Output); (2)High-Voltage Outputs: 50 V; (3)Output Clamp Diodes; (4)Inputs Compatible With Various Types of Logic; (5)Relay-Driver Applications.



OPA2340UA     SP232ACN       MAX7219CWG        MAX233ACWP             LM2904N
LM2596S-ADJ     LM319N         LM339DR         MAX1715EEI            MAX3232ESE
MAX202EESE       LM2904M         LM833N          LMC6034IM            LM723CN
LM741CN        EPF10K30AQC240-3     AT89C52-24PC        AD8042AR        FDS6690A

The Display Breakout Board MAX7219CNG

It is going to take a little more than luck to control these using an Arduino Duemilanove or Uno. A LED matrix is wired so that a common pin controls the anode or cathode of a row or column. This allows the matrix to be controlled using just 16 pins instead of 64 individual ones. However there is another trick that has to be done when controlling a LED matrix, and that is to light up a single LED at a time. When LEDs are wired in a matrix, there are locations where if you light up 2 LEDs a third one might light up too. To avoid this, each LED is turned on and off quickly.

I chose to use an IC made by Maxim IC called the MAX7219CNG. This will allow each individual LED to be addressed in the matrix.  These can be purchased at Sparkfun Electronics . Here is the datasheet. This IC was made to control a single 8x8 LED matrix. We will be using 6 matrices so this project requires 6 of these ICs. There is a nice library that was created for these that will aid in the programming of this project. This IC and library takes care of lighting up which LEDs that you want to light up without worrying about turning them on and off quickly like I explained. This will allow us to easily create and display images and worry about the pong side of things and not about all the finer details of displaying the image.

Now the IC needs to be connected to each matrix using the correct circuit. I designed a simple breakout board for this IC. I am not an electrical engineer, but the schematic you see in the pictures is pretty much what I understood from this page . Not really that complicated. I made this in Eagle and have uploaded my schematic and board files for you. Basically there are headers for the communication pins and for the output pins that go to the matrix. There are 2 capacitors on the input power and a resistor that sets the current for the LEDs. I used a 1K resistor for my application which worked fine.


So once you have the files, you can order the PCBs (printed circuit boards) from a batch house, I use Seeedstudio  which will cost about $10 for 10 PCBs, or you can always create the circuit on a prototype board if you choose. You can see some images of my finished PCBs in the pictures.

You can order the parts needed to assemble the breakout boards from Digikey .
The parts needed are:
- 6 10uF electrolytic capacitors
- 6 0.1uF non-polarized capacitors
- 6 1K resistors
- 6 24 Pin IC sockets
- Optionally you can use headers instead of soldering wires directly to the boards. I did not.

Now solder these components on to the break out board. This is a pretty simple step. You just have to make sure you put the polarized electrolytic capacitor in correctly and line the notch in the IC socket up with the notch in the silkscreen of the PCB. See the pictures for the soldering step. When you are done soldering, you can insert the MAX7219CNG right now or wait until after you solder the matrix in place, which will be next, so you do not damage the IC in any way.




IRF7413       LM348N           LM2904          MAX693CWE            IRF640
LM124J      MAX1617AMEE      IS61C256AH-15J        INA114AP         LM324DR
LF398N        ICL7107CPL        LF356N         EPM3256ATC144-10       AD1981BJST
AD574AJD     BCM5208KPF      AMS1117-3.        FDS6912A         EPM3064ATC44-10N

EPM3064ATC100-10 low–cost, high–performance device Altera MAX architecture

The EPM3064ATC100-10 is a low–cost, high–performance device based on the Altera MAX architecture. Fabricated with advanced CMOS technology, the EEPROM–based MAX 3000A devices operate with a 3.3-V supply voltage and provide 600 to 10,000 usable gates, ISP, pin-to-pin delays as fast as 4.5 ns, and counter speeds of up to 227.3 MHz. The EPM3064ATC100-10 in the –4, –5, –6, –7, and –10 speed grades are compatible with the timing requirements of the PCI Special Interest Group (PCI SIG).

EPM3064ATC100-10 absolute maximum ratings: (1)VCC Supply voltage With respect to ground: –0.5 to 4.6 V; (2)VI DC input voltage: –2.0 to 5.75 V; (3)IOUT DC output current, per pin: –25 to 25 mA; (4)TSTG Storage temperature No bias : –65 to 150 ℃; (5)TA Ambient temperature Under bias: –65 to 135 ℃; (6)TJ Junction temperature PQFP and TQFP packages, under bias: 135 ℃.

EPM3064ATC100-10 features: (1)High performance, low cost CMOS EEPROM.based programmable logic devices (PLDs) built on a MAXR architecture; (2)3.3-V in-system programmability (ISP) through the built in IEEE Std. 1149.1 Joint Test Action Group (JTAG) interface with advanced pin-locking capability; (3)Built in boundary-scan test (BST) circuitry compliant with IEEE Std 1149.1-1990; (4)High–density PLDs ranging from 600 to 10,000 usable gates; (5)4.5–ns pin–to–pin logic delays with counter frequencies of up to 227.3 MHz; (6)MultiVoltTM I/O interface enabling the device core to run at 3.3 V, while I/O pins are compatible with 5.0–V, 3.3–V, and 2.5–V logic levels; (7)Pin counts ranging from 44 to 256 in a variety of thin quad flat pack (TQFP), plastic quad flat pack (PQFP), plastic J–lead chip carrier (PLCC), and FineLine BGATM packages.




CA3140E        DS2118MB           74HC04D            4N25            UC2854DW
TL084CN         TL082CP           PCI9052          OPA2277U         MC145407DW
LXT905PC       MAX1631EAI          LM224J           LT1260CS          LM35DM
MAX890LESA      LM331N           MC145406DW          LF353N            LM1881N