DS

Television set equipped with a circuit protector, then there are several possibilities that could occur if there is a problem on one of the circuits. Protect circuit horizontal part - When turned on the horizontal plane will live for a while, but then died again. At the time of death when measured on the horizontal driver indicates that no drive signal. If the power jack unplugged then try to turn on again then repeated a similar incident will happen again. But if if the base of the transistor or transistor try to open removable drive signal was viable. Protect circuit of microcontroll - If checked the voltage at pin microcontrol power on-off control, power control is turned on when the plane going "on" for a while then back "off". If you unplugged the power jack will power "on" again, but briefly and then keep coming back "off". On certain models sometimes die when the aircraft was marked with the blazing LED indicators blink. Protect circuit tu...

i have constructed this inverter to charge my EV i have 12V DC from solar pannels and i need to recharge my 120V battery pack so i needed an voltage inverter after buying one i have tested it and it blowed in 2 hours so i started building one myself using the ferite transformer and rewired it for my use is very sinple and can be made for every one needs can output any AC voltage with proper wiring i use it only with 110v for my needs but in the diagram i had added another wiring for 110 and 120V as you can see it powers an 200W halogen lamp for testing in test i have used only 2 FETS but they are too hot so i have added another 2 for more power if you use only 250W you can use only 2 with propper cooling if you want more that 500W you need to add another 2 for every 250W of power and use an bigger transformer from my findings this inverter has around 75% performance Be carefull at output you have dangerous voltage Step 1: The built inverter for 250W   A s i said this one gets hotte...

This is a small adjustable clock/date with thermometer function based on PIC16F628 or PIC16F84 microchip and DS18S20 or DS18B20 temperature sensor. The hardware part is very simple because it only uses a pic microcontroller, the DS18S20/DS18B20 sensor, 4x7 segments (common anode, something like KW4-301xxx Series, or common cathode something like CC56-21SURKWA), four transistors, some rezistors! When you first power the device the clock is mentained for 8 seconds. Then the date for 2 seconds and temperature will be displayed for 3 seconds. The clock has four buttons, with one button you enter in set mode, with another button you increase values, the third button will be used to decrease values and you can put or not, the reset. If you don't want a reset button just connect the pin to +5V. You can change: ho -> hour, from 0 to 23 nn -> minutes, from 0 to 59 (I could not display m so I used n twice for it) dd -> date day, from 1 to days/month -> calculated based on month...

Volt regulators such as the LM708, and LM317 series (and others) sometimes need to provide a little bit more current then they actually can handle. If that is the case, this little circuit can help out. A power transistor such as the 2N3772 or similar can be used. The power transistor is used to boost the extra needed current above the maximum allowable current provided via the regulator. Current up to 1500mA(1.5amp) will flow through the regulator, anything above that makes the regulator conduct and adding the extra needed current to the output load. It is no problem stacking power transistors for even more current. (see diagram). Both regulator and power transistor must be mounted on an adequate heatsink. Circuit diagram: Ampere or Current Booster Circuit Diagram Parts: R1 = 1R-2W R2 = 10R-2W C1 = 35v-470uF C2 = 35v-470uF Q1 = TIP2955 IC1 = 78xx Regulator

An optocoupler (or an optoelectronic coupler ) is basically an interface between two circuits which operate at different voltage levels. The key advantage of an optocoupler is the electrical isolation between the input and output circuits. With an optocoupler, the only contact between the input and output is a beam of light. Because of this it is possible to have an insulation resistance between the two circuits in high voltage applications where the potentials of two circuits may differ by several thousands of volts. Read More.....

Strain gauges are electronic components that serves to measure the pressure or weight. "Strain Gauge"was first discovered by Edward E. Simmons in 1983 in the form of metal foil that is insulif (isolation) attached to the body weight pressure to be measured. In principle, if the strain gauge given the pressure of the electrical resistance strain gauge will change because the process of deformation in the strain gauge the magnitude of change in electrical resistance that would follow the change of the received pressure strain gauge.

Quality Stereo Wireless Microphone or Audio . This stereo FM wireless microphone also makes a great quality audio link. We tested it to beyond 50 meters and it was rock solid. It’s certainly not the first wireless microphone we’ve ever published but this one is a little different. It’s stereo, providing surprisingly good quality sound. Second, it has a really good range. We tested it at well over 50m and it was still performing very well – noise-free, in fact – but at the time we couldn’t get our receiver any further away. So it’s likely to have even better range than that. Complete Project: It's easy to build, requires very little setup... and it's cheap! In fact, the low price might turn some people off, thinking it's low quality. Try it - and be pleasantly surprised! Third, it really is simple to build – the hard work (the transmitter module) is already done for you. It’s just a matter of assembling the microphone module, which contains the electret mics themselves, ...