2SC Datasheet PDF Download – NPN SILICON FPITAXAIL TRANSISTOR, 2SC data sheet. Description, NPN Silicon Fpitaxail Transistor. Company, ETC. Datasheet, Download 2SC datasheet. Cross ref. Similar parts: ECG23, 2SC, ECG 2SC は高周波高出力段用に設計されており, 27MHz帯の CB および 50MHz. * C – 7 BRISLIT. GEOT DAMEMO,. 短絡に対する耐破壊強度が大です。.

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Frequency calculations For the two lower bands 80 and 40 meters the operating frequency is calculated by the following scheme: The transistor gets only a low quiescent base current, so linearity lacks compared to class A. The DDS now puts out 2 Volts p-p on from 3 to 20 MHz giving a pure sine wave with flat signal levelling over the full frequency span.

I will talk about this in a later post. If available check the output with a spectrum analyzer! I was lucky that 2sc13007 power supply I had built for my QRP rigs was still under test otherwise it might have damaged the rig seriously, because there were 20 Volts on the leads.

All lines are connected by the side-plugs. This unit was destroyed because by a momentary laps of reason.

I had two cases of faked semiconductors the recent year. To avoid any fuss in recevier and ssb generation design I have again picked up the single-conversion principle that has successfully been applied in my former transceivers which uses only one interfrequency IF.


Two dc outputs are available. Q6 also does not have that ferrite bead on it either. Your email is included with the abuse report. Each time I get a new package of RF power transistors today, the first step is to check them out in the former CB rig if they are able to deliver the desired output power. The solution to the bias-problem is the push-pull circuit. Again this is to avoid the repeated soldering process ruining 2sc1370 Veroboards:.

Compact size to make the radio fit for portable, outdoor and holiday use flight! Got an idea why?

RF Power Transistor

Output power in two-tone-test: And, because a push-pull amp offers built-in even-harmonics suppression, the production of overtones is limited by this circuit without the need for filters. Band switch drivers The drivers for each band that drive 3 series switched relays per band are controlled by one seperate port of the controller Ports PE3 to PE7. Guess what the fake is?

So there should always be a certain amount of gain in reserve. It worked from the start.


So is the printing. Building a multi band rig is, as you might conceive, much more complicated than setting up a monobander.

Also I had lots of datasheey particularly on the higher bands and self-oscillation occured as soon as I started to increase the drive coming from the tx mixer. Most relays normally tend to have good RF decoupling capabilities because capacities of the unswitched contact pairs are in the For a long time I have owned some colored LCD cellphone displays from a dive computer project that I had completed some years before.


DDS controlled by microcontroller Colored graphic LCD 5 ham bands 80, 40, 20, 15 and 10 meters to be 2sc13307 SSB only 10 Watts out, transmitter equipped with bipolar transistors in push-pull mode lots of CB-types still on my stock or replaced e. I first chose the AD by Analog Devices.

I had located the data sheets for both but was too datashset and too much of a technical ninny to actually do an intense side-by-side comparison. I recommend to stay at least 5 to 10 times lower than Nyquist freqeuncy datashewt possible.

When I tested the first version of the amplifier, I was deeply disappointed. In the transmitter section: But there is no need to disconnect and reconnect an endless number of cables each time you perform a modification. And, oh yes, kudos to board maker who, 2sc107 his wisdom, provided both TO and TO holes for the Q7 final.

This is the reason why I drew only the relevant lines for my transceiver to the schematic above. OK, I could have bought one. One shortcoming should be mentioned: On Fri, May 25, at 3: Sorry for being lazy and do appreciate any response on this subject. Adequate emitter bypassing was one of these.