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。.

Author: Dabei Zulunos
Country: Madagascar
Language: English (Spanish)
Genre: Education
Published (Last): 12 November 2017
Pages: 88
PDF File Size: 12.93 Mb
ePub File Size: 3.40 Mb
ISBN: 434-4-46142-536-3
Downloads: 28366
Price: Free* [*Free Regsitration Required]
Uploader: Tekinos

A lot of values are detected with sensors in this rig.

Several voltage dividers are visible on the upper left part of the scheme. Sorry, not on the agenda. But, as I said before, all these measures cost a certain amount of gain. In the receiver section: Q6 also does not have that ferrite bead on it either. Keep an eye on not 2sc1370 the amplifier!

Must be able to deal with high signal levels on the lower ham bands. Two dc outputs are available. Next steps are an IF preamplifier which is connected to a manual gain control potentiometer sited in the front dahasheeta ladder filter with about 2. You may ask why I used 2 push-pull stages.

But, as a vatasheet homebrewer, I thought to myself: Each transistor of the pair now only amplifies one of the half-waves of the duty cycle. It worked from the start.

I had two cases of faked semiconductors the recent year. Datassheet the board takes some seconds more. Demonstration how to solder rf transformers to a Veroboard. There are three sections in which band switching must take place in my rig:. The audio-derived AGC circuit is the same like in my hand-held transceiver. Regards Ollie k0lqk toggle quoted message. Wanna be LM fake power regulator Fakes like these are also easy to recognize.

This unit was destroyed because by a momentary laps of reason.

I bought about 50 pieces for around 10 Euros. To learn more about multi band QRP transceivers I also browsed the web for similar projects. It takes only 1 or 2 minutes for example getting the transmitter board out for changing a component.


Must be able to deal with high signal levels particularly on the and meter-band. But other crystal frequencies are also possible. Again this is to avoid the repeated soldering process ruining my Veroboards:.

2SC Datasheet ETC pdf data sheet FREE from

Just offhand, anyone have practical experience in substituting a 2SC for a 2SC? These boards are equipped with an ATMega micorocontroller which is capable to deliver enough capacity and calculation power even datsheet extended software. To make this fairly complex radio not too large, I found that sandwich design would be the best way to save space and make the transceiver friendly for building and service.

An audio preamp and the LM as daatasheet power amp do the final job of amplifiing of the audio signal together to loudspeaker level. Fakes like these are also easy to recognize. But, no need to get desperate: Search Only Within This Topic.

Due to physical reasons Nyquist frequency the highest frequency you can get out of such datasueet DDS is about one third of the clock oscillator frequency what in the first case means about 40 MHz. Subject of the new topic: 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.

2SC1307 Datasheet

VFO eatasheet LO frequency considerations In this transceiver the interfrequency IF is 10 MHz which is based on the fact that respective crystals can cheaply be purchased in larger quantities to build appropriate ladder filters with. There are various cures for the various problems. But it was a hard way to go there! Each relay gets about 4 volts of coil voltage then drawing about 40 mA which is more than enough because my OMRON relays start reliable switching from a coil voltage of about 3.


So, a lot of potential problems ware waiting for the ambitious radio constructor. The waveform of the two-tone test is absolutely top on all the 5 bands. OK, I could have bought one.

Amplifier stages are coupled by relatively low valued capacitors, Coupling transistor stages with capacitors My first mistake before bypassing correctly was to try to bring monoband concepts to a broadband amplifier. So, here is my experience… 1. I will talk about this in a later post.


Taking your IF between 8 and 12 MHz might be the best choice in my opinion. These are seperated by the input transformer and are put together again by 2zc1307 output transformer: The main objectives for the receiver were:.

DDS and amplifier for QRP SBB multi band transceiver C DK7IH Band switching The main thing that makes a multiband transceiver much more complex than a monobander is the neccessity to switch frequency related filters in certain parts of the circuit even if broadband designs are widely applied. The DDS can not drive the diode balanced mixer without amplification!

Lots of birdies included, sometimes at least. Both the final and the driver are heatsinked and the board differs from 2dc1307 ones we are working off of. In this transceiver the interfrequency IF is 10 MHz which is based on the fact that respective crystals can cheaply be purchased in larger quantities to build appropriate ladder filters with.