Home  |  Circuit diagrams  |  Electronics projects  |  Store  |  Links  |  Contact  |  Privacy policy  |  Sitemap

..::::..





4 Transistor Transmitter

4 Transistor Transmitter

Description:

This circuit provides an FM modulated signal with an output power of around 500mW. The input Mic preamp is built around a couple of 2N3904 transistors, audio gain limited by the 5k preset. The oscillator is a colpitts stage, frequency of oscillation governed by the tank circuit made from two 5pF capacitors and the inductor. ( Click here for Colpitt Oscillator Resonant Frequency Equation.) Frequency is around 100Mhz with values shown.

Audio modulation is fed into the tank circuit via the 5p capacitor, the 10k resistor and 1N4002 controlling the amount of modulation. The oscillator output is fed into the 3.9uH inductor which will have a high impedance at RF frequencies.

The output stage operates as a class D amplifier , no direct bias is applied but the RF signal developed across the 3.9uH inductor is sufficient to drive this stage. The emitter resistor and 1k base resistor prevent instability and thermal runaway in this stage.

Circuit by:
Paul K. Sherby
Belleville,
Michigan.
USA
Website:- http://www.geocities.com/Eureka/Park/5323

..:: Important ::..

Read disclamer, please!

 

Circuit diagrams home  |  Circuit diagrams  |  Electronics projects  |  Store  |  Links  |  Privacy policy  |  Contact


Cialis 5 mg senza ricetta Effetti collaterali del Cialis 5 mg Ordina Cialis 20mg Consegna a domicilio di Cialis originale in Svizzera Acquista Viagra in Svizzera senza prescrizione Cialis 10mg senza ricetta Dove comprare Viagra in farmacia online Sconto Cialis 5mg Dónde adquirir Reduslim Spedra Avanafil in vendita online Acquista Viagra in Svizzera senza prescrizione Dónde comprar Cialis Comprar Viagra Contrareembolso Descuento Cialis 5 mg Comprar viagra original Efectos secundarios de Cialis 5 mg Reduslim resultados Remedios para la Disfuncion Erectil Cilis vs Viagra Aviator ???? ?? ?????? Acquisto Cialis 5 mg online Cialis 5 mg effetti collaterali Comprare Cialis 20mg a buon prezzo Consegna a domicilio di Cialis originale in Svizzera Acquisto online di Viagra senza ricetta in Svizzera Cialis 10mg Acquistare Viagra in farmacia online Costo del Cialis 5mg Reduslim opiniones Comprare Spedra Avanafil senza ricetta online Dove comprare il Viagra in Svizzera Comprar Cialis barato precio Viagra genérico Descuento Cialis 5 mg Viagra sin receta Cialis 5 mg efectos secundarios severos Reduslim pérdida de peso Problemas de erección tadalafilo en venta avanafil prezzo cialis 20 mg prezzo cialis effetti benefici cialis 10 mg Reduslim Kaufen pulse x coin price avanafil prezzo buy cialis or generic tadalafil ?????? ?????? ??????????? ?????? ???????? ?????? ?????? ????????? ?????? ?????? ???????????? ?????? ?????? ? ?????? ??????????? http://diplomy-originaly.com ?????? ?????? ????? ?????? ?????? ? ??????? ??????????? ?????? ?????? ???????? ?????? ?????? ???????????? ?????? ?????? ???????????? http://diplomsagroups.com ?????? ?????? ????????? ??? ?????? ?????? ?????? ?????? ????????? ???? ?????? ?????? ? ??????? ??????????? ?????? ???????? http://sreestrom.ru/ ?????? ???????? ?? 11 ????? ?????? ?????? ?????????? ?????? ?????? ???? ?????? ?????? ? ???????? ?????? ?????? ? ?????? ??????????? https://russian-diplom.com ?????? ?????? ????????? ? ?????????? ? ?????? ?????? ?????? ???????????? http://rudiplomirovanie.com ?????? ?????? ? ??????? ?? ? ?????? ?????? ?????? ???? ?????? ?????? ???????? ?????? ?????? ? ??????? ?? ? ?????? ?????? ???????? https://premiums-diploms.com ?????? ?????? ? ???????? ?????? ?????? ????? http://russdiplomiki.com ?????? ?????? ????? ? ?????????? ? ?????? ?????? ?????? ??????????? https://diplomansy.com ?????? ?????? ? ?????????? ? ?????? ?????? ?????? ?????? ???? https://diploms-asx.com ?????? ?????? ? ?????????? ? ?????? ?????? ?????? ?????? ? ??????? ??????????? ?????? ?????? ????????? ???? ?????? ?????? ? ?????????? ? ?????? ???? ?????? ?????? ? ??????? ??????????? https://eonline-diploms.com ?????? ?????? ????????? ? ?????????? ? ?????? ?????? ????????????? ? ???????? http://free-diplommi.com ?????? ????????? ?????? ?????? ?????? ????????????? ? ???????? http://diplomrussian.com ?????? ?????? ?????????? ?????? ?????? ?????? ? ?????? ??????????? ?????? ?????? ???????????? ?????? ?????? ???? ? ?????????? ? ?????? ?????? ?????? ????????? ?????? ?????? ???????? ?????? ?????? ???? ? ?????????? ? ?????? ?????? ?????? ???????? ?????? ?????? ?????? ?????? ? ?????????? ? ?????? ???? ?????? ?????? ???????? ?????? ???????? ?????? ?????? ????????? ? ?????????? ? ?????? ?????? ????????????? ? ????? ?????? ?????? ????? ?????? ?????? ????????? ? ?????????? ? ?????? ?????? ?????? ? ?????? https://diplomsy-landsy24.ru/ ?????? ?????? ???? ? ?????????? ? ?????? ??? ?????? ?????? http://diploms-service.com ?????? ?????? ????????? ? ?????????? ? ?????? ?????? ?????? ???????????? https://kyc-diplom.com ?????? ??????????? ?????? ? ?????????? ? ?????? ?????? ?????? ???????????? ??? ?????? ?????? ?????? ?????? ? ???????? ??? ?????? ???????? https://originaly-dokuments.com ?????? ?????? ? ?????????? ? ?????? ?????? ?????? ?????? ???? https://diplomy-grup24.com/ ?????? ?????? ? ?????????? ? ?????? ???? ?????? ?????? ??????????? ?????? ?????? ????????? ?????? ?????? ???????? ?????? ?????? ?????? ?????????? https://diplomansy.com/kupit-diplom-novogo-obrazca?????? ?????? ? ????????? ? ?????? ?????? ?????? ????????? ???? ?????? ?????? ? ?????? ????????? ?????? ?????? ? ???????? ????