We design our receiver based on Toshiba TA datasheet and later we try TA and CD with same circuit. Either CD or TA CDGP Datasheet PDF – FM/AM RADIO IC – WUXI CHINA, CDGP pdf, CDGP pinout, Other data sheets within the file: CD Pinouts: CDGP datasheet. Description: The CDGP/ Others datasheet of same file: CD,CDGB,CDGP. /01/

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There are similarities but piezoelectric effects are usually bulk rather than surface properties and I think that’s the difference. The signal obtained output from 4 pinobtaining the kHz IF signal selected by frequency to input from the 7 pin. Always worth a try!

There are 2 resistors connected to the collector of theand there is a biased resistor k connected in between. According to the circuit they are connected to Fm Out and Fm In, so it much be some kind of filter.

Sign up or log in Sign up using Google. Crystals are more expensive and placing a resistor in series with a crystal deteriorates it’s properties. One more nicely done radio with TEA By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. All files are avaialble at elect. Click here to cancel reply.

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Strange op-amp circuit FM radio – Electrical Engineering Stack Exchange

Learned few new things, and got some questions, especially the output stage. BrianDrummond According to muRata, see: Code is shared on Github: May 19, at 5: That Crystal filter consists of many resonators to make a filter.

CF2 2 pins can be either a crystal or a catasheet resonator. According to the above-mentioned signal flow ,it’s convenient to repair AM or FM radio with sound or radio trouble. I am working on a simple FM radio receiver. Home Questions Tags Users Unanswered. I also found a wiki entry: Becauce CD will not easily damaged,we should pay attention to the periphery of its three-terminal filters to be checked.

Then a cheap trick to fake a more logarithmic behavior is to load the potmeter with a relatively low resistance, R6 in this case. It behaves lika a bandpass filter but with much narrower bandwidth than you could easily get from an LC filter. But if I’m wrong please explain the difference as I could not find any. Rohit, that is great, congrats. It’s a CE stage Common Emitterpart of the output signal is fed through that k resistor back to the input.

Mail will not be published required. The speaker doesn’t connect to the ground in this setup, Very strange. datashete

Post as a guest Name. Google doesn’t show any detail information as well.

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TAP datasheet, pinout, features and circuit details – Circuits DIY

It reduces the gain of that stage but improves linearity and bandwidth. Thanks for the information, hopefully it helps to motivate me to get it started. May 20, at Sign up using Email and Password. Yet another link to a project which uses unobtainable or at least difficult to source components.

After being converted by the IF amplification, detection, electronic switch, the signals output from 11 pin to reach the post-stage circuit. Strange op-amp circuit FM radio Ask Question. This SAW filter is already a filter by itself in one component.

CD2003—AM/FM radio monolithic integrated circuit

Print this Page Comments Reading 3. Since it has a ohms resistor in series I conclude it’s a resonator.

May 19, at 8: Email Required, but never shown. Gives realtime channel strength and transmission quality values too over serial. CF2 may be a phase shifter required for the quadrature detector FM demodulator – a kind of ceramic filter but optimised for linear phase across the IF passband. Recent Comments Bill F: January 8, at 4: