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Circuit Project ElectronicThe Safe constant current source.
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: [...]
The universal battery charger using Lm317
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, [...]
simple nonlinear low pass filter
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 [...]
Light meter by LM334
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 [...]
IRF540 MOSFET N-CH 100V 33A TO-220AB
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
Alpha Potentiometer 25K Linear
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 [...]
microtivity 5mm Assorted Clear LED
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 [...]
Chocolate style keyboard
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. [...]
The resistors kit 86Value 860 Pcs.
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 [...]
RF-Microwave Circuit Design for Wireless Applications
A unique, state-of-the-art guide to wireless integrated circuit design. With wireless technology rapidly exploding, there is a growing need for circuit design information specific to wireless applications. Presenting a single-source guidebook to this dynamic area, industry expert Ulrich Rohde and writer David Newkirk provide researchers and engineers with a complete set of modeling, design, and [...]
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