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Statistics |
| Unique Visitors: 2 |
| Total Unique Visitors: 216490297 |
| Visitors Out: 70175 |
| Total Visitors Out: 418055 |
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| Easy in-line rf wattmeter circuit |
| 2012-02-09 10:29:52 |
This is a little ideas of Easy In-line RF wattmeter circuit, it is insensitive to frequency, so calibration will be correct better than a wide frequency spectrum. For example the whole amateur HF spectrum; If the values of L2, the voltage divider at capacitors C1 and C2, and the resistances of R1 and R2 are [...]...
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| The Safe constant current source. |
| 2012-02-07 01:32:02 |
Figure the top is a Safe constant-current source circuit, how it works? A cmos op-amp (number ICL 7611) controls the input current through a P-channel Hexfet power transistor (No. IRF 9520), then to keep up a constant voltage across the R1. As they are connected in a serial form, so use the together current by: [...]...
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| The universal battery charger using Lm317 |
| 2012-02-04 04:51:09 |
Here comes very simple idea is the universal battery charger circuit. When, an input power is applied to the circuit. The SCR1 (Silicon controlled rectifier) turn off, then not has a bias current path to ground. The LM317 acts as a current regulator, It is connected to the battery thought a one way diode D1, [...]...
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| simple nonlinear low pass filter |
| 2012-01-23 00:54:06 |
This simple circuit is nonlinear passive on low pass frequency filter. It ‘s small size and easy to made for do not used the external power supply, but refuse a lot of noise ripples and need to a input voltage is stable. The circuit works best, when the signal level is importantly higher than the [...]...
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| Light meter by LM334 |
| 2012-01-16 07:58:15 |
The light meter is a tool, measure the quantity of light, widely used to a photography, To decide the correctness of the exposure. Sometimes, we are use with other works, such as my son likes to use in science experiments, which do not need to have high quality. This simple light meter in figure 1 [...]...
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| IRF540 MOSFET N-CH 100V 33A TO-220AB |
| 2011-12-25 07:54:55 |
Specifically designed for Automotive applications, this HEXFET® Power MOSFET utilizes the latest processing techniques to achieve extremely low on-resistance per silicon area. • VDSS = 100V • RDS(on) = 26.5mOhm • ID = 36A. Read more...
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| Alpha Potentiometer 25K Linear |
| 2011-12-25 07:51:07 |
Guitar Amp Potentiometer. Audio/Log pots are typically used for volume control, and Linear pots are typically used for effects. 25KL / 25K Linear / 25KB / 25,000 ohms. Fits 3/8″ Hole. 1/4″ Solid Shaft. 24mm Body, Solder Lugs, 1/2 Watt Rated, 300° Rotation, 250VDC Rated, Carbon Composition. Comes With Hex Nut and x2 Washers Read [...]...
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| microtivity 5mm Assorted Clear LED |
| 2011-12-25 07:44:49 |
Contains 10 Clear Reds, 10 Clear Yellows, 10 Clear Greens, 10 Clear Blues, 10 Clear Whites and 10 Clear Pinks. These light-emitting diodes work well for a wide variety of applications including Arduino projects. Comes with some resistors for connection. Forward Voltages are Clear Red and Clear Yellow 1.9-2.0V, Clear Green: 2.9-3.1V, Clear Blue, Clear [...]...
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| Chocolate style keyboard |
| 2011-11-28 23:03:12 |
Now I have a problem keyboard of my laptop,very hot. My friend Tom said, I should to change was a external keyboard,wireless stye is so well. I loved a laptop keyboard,it is chocolate style softly and slim. But found difficultly and expensive,too. I saw on www.amazon.com,the one keyboard was very interesting,comfortably compact,tight workspace,saving size, etc. [...]...
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| The resistors kit 86Value 860 Pcs. |
| 2011-11-14 00:22:12 |
Read more When we made the electronic projects. The resistors was important component because we use more value and too much code. We must had a lot of resistors in store. But where to be buy they. Follow to I search in internet,founded The Joe Knows Electronics 86 Value 860 Pc. Resistor Kit ,good produce [...]...
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