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If the amplifier class B need two transistors to work properly, then there are the so-called class C amplifier that only need 1 transistor. There are few applications that really only requires a positive phase only. An example is the pilot frequency detector and amplifier, RF tuner amplifier circuit and so forth. Class C transistor amplifier active work only on the positive phase only, even if the need is quite narrow only the peaks are strengthened. Time signal can replica by series resonance of L and C. Typical of the series class C amplifier is like in the following series. Basic Schematic Power Amplifier Class C The circuit is also not necessary created bias, because the transistor was deliberately made ​​to work the saturation region. Series L C in the circuit will resonate and contributed important in re-replicate input signal into an output signal with the same frequency. This series if given the bait...

If the amplifier class B need two transistors to work properly, then there are the so-called class C amplifier that only need 1 transistor. There are few applications that really only requires a positive phase only. An example is the pilot frequency detector and amplifier, RF tuner amplifier circuit and so forth. Class C transistor amplifier active work only on the positive phase only, even if the need is quite narrow only the peaks are strengthened. Time signal can replica by series resonance of L and C. Typical of the series class C amplifier is like in the following series. Basic Schematic Power Amplifier Class C The circuit is also not necessary created bias, because the transistor was deliberately made ​​to work the saturation region. Series L C in the circuit will resonate and contributed important in re-replicate input signal into an output signal with the same frequency. This series if given the bait...

Circuit with RC Elements Fig. Basic circuit diagram: RC element Advantage: 1) Limit the spike to low levels and also limits dv/dt. 2) Can be used for AC & DC contactor Note: Very careful selection of resistance & capacitance is required to achieve desired switching time of contactor Fig. 3: contactor with RC Element ........

For some time now I have watched the market for microcontrollers that have .NET runs, more precisely .NET micro framework or NETMF short. To program these boards exclusively in C #. Now I have added to it and get me a FEZ Domino board. It costs € 75.-, but also has a quite generous feature set with USB host and microSD card. Let's see if this is good for a robot. Ok, what is one of them holding a Microsoft operating system on a relatively underpowered microcontroller. Can it work? Hardware Features First of all the technical data: Microsoft's .NET Micro Framework 4.1 NXP LPC2388 ARM7 Processor 72Mhz Arduino pin compatible Arduino shield compatible Debugging and programming via USB with Visual Studio 2010 (VS2010 with Express) 21 digital IOs, 6 analog inputs 3xUART, 1xI2C, 2xSPI, 1xCAN 3.3V IO, 5V tolerant The processor comes from NXP. It is an LPC2388 ARM7 core.512kB 96kB FLASH and RAM. It is already the .NETMF of electronic GHI . With .NETMF the chip is then called USBizi a...