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l aShem.com | RF Circuit | FM Transmitter with Opamp

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Sdwmatia > Rf drad > FM Ir.mwrwtter with Opamp

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- 9 volts

Circuit Ol FM Tranwrtlter with Opamp

Parts Ltets

Rl 4K7	R4 150K	R7 3K9(2K7)
R2 4K7	R5 220R	R8 120R(82R)
R3 4K7	R6 4K7

Ml reosters e<cept £6 ar* at least 0.25W rated. R8 « ot kast 0 5W rat«d (the 0 ĆW metal film M-senes fi om Ma pin can be used for Rl-RS).

Ci tn    C4 22lF    C7 i On    ClO In

C2 4y7    cs tn    C0 |n

C3 in    06 lOn    C9 330F

VC1 5-6CpF IC1 LM358 Q1 ZTX108

Advanced relay test sets

Test protection relay9 meters, transducers and morę

t M<1

Nota*:

Lt *0 1 12iH (ths tones to the m*Jd* o f th* FW band, 98 MKz, with VC1 atits oantra v*iue of 33pF) u* 5 tuns ol 22 swg *nam*lod coco*" wtre c*c**-woird on « 5n>m(3/t6*‘> ilintttf fermer    vou can hav* a ft**d 33pf capmKMd

ofVCl and hav« LI as an adjifetafcte mofcfed col (eg UF64U from M«pin) VCt wl <yve you a tunnj rangę of 85 - 125 MKz. ard a posiiUe chcice a the Ftiipi typ* pciypropyfehe ffm tnmmir (Maplncodę WL72P). Two s*ts of oioiatcr ł*śs reisiors are av«n, the en es n the fcracFets give ab out 20frt» morę RF power. Mika is our favointe OmndrectKnd ajtriwn electret (Mapln codę FS43v/). Ant is a (lambda / 4) włip monopole (eg 76 ems of 22 swg copper wrt). Ql u configired as o Clapp osolator. fregjcncy modJofion resułts from the oudo vołtaoe changng the tranastor c bose-emitter capaotance.

TiUe FM Transmitter with Opamp

Scuree unknoern Fvl>lshed on: 2006-01-15 Readst 754 Phnt wenlon K

Other tdiematict from Rf draa

•    Vf# vndeo Irammatcr

•    I lectronk l eve«dropp«nq Deekes Oetcctor

•    Long rangę PM transmiter

•    7 Trarrustor FM Vo*ce fransmater

•    3WFM Transmitter

•    TOdB VHr Ampaher

•    AM T o f M conyerter

•    FM Trarwnftter Bug

•    CB racehrer

•    Micro Power AM BroadcaM Transmitter Sdiemilct > Rf cfroai > FM Irmnmilter with Opamp

ataotrcr.c - Uff£«f tcprarCs aUSfflł itti« AACetd Oanf>e the Oular -ił.iC 2i2i« Fage generatwn 0.011 seccnds FM Transmitter w«h Of-jrnp

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2008-11-19 17 48