Can somebody help me,to explain me this circuits
this is converter, but i realy dont understand how it works( i understand mixers, you put rf to base and local oscillator to emiter, but this is a litlle bit complicated)
Hi, i take one If amplifier, from internet and i want to make the second the same, but i dont know how to couple, of what i need to do, to get more gaing
can somebody help me?
here is one IF amplifier in ltspice, rename in asc, or remove only txt extesion.
and what is the best to do, is for fm...
i just want to tell, can somebody, who have time just to read this file, you understand direct, if you know about fm detection, i just dont know how to make a transformer in ltspice, can somebody told how to make it this circuit with transformer and tuned please
Hello, i build the radio like they say in the book, and i did everything with VOM(testing with only multimeter),
everything was like in book , but when i finish, i switch to am or fm, i just hear high noise
Can somebody help, to understand the transistor, what does do 390pF and C(tune), and 4,3µH, they form tank circiuits? and also resistor 1K and capacitor .1, is possible somebody with little words to descirbe how it works please..... Thanks.
hi to everybody,
can somebody tell me, ferrit rod coils, is a transformer?
if yes how do you calculate? what is the formula
how you select the coupling inductor L2 or L3.........
because like i read the maing inductor must connect to capacitor(for frequency to find min and max i understand)...
hello to everybody,
can some help to make a ferrit rod antenna and to explain me thnx
is for am radio, trf regenerative
i have a ferrit rod 90mm diameter, and i have 0.5mm wire magnetic.
this is the schematic , i make also the am receiver, but i dont know the ferrit rod(is problem i try to...
i buy allmost all thing needed, for buil you own radio circuits 2013,
but in electronics shop he told me , there are old, you can find it only in old radio
he cant help, those components dont sell anymore,
maybe somebody can help me how to find online those component
Hello to everbody can you help me how come C6 to be 10p and c5 13.5 and and l1 to be 190n and L6 240n
i start with 100Meghz, with one circuits 50/XL or 50/XC now become three different thanks
i understand the first circuit, i understand the second circuit, but now they make three circuits
please can somebody help, how to find in electronics shop online
those components and to buy, is here juse one to make for all, i need juse one, wich i can use for all projetcs
L1 antenna coil: 470uH with 1 turn wrapped = 2
L2 antenna coil: 470uH...
can somebody help me,
what can i use in place of audio transformer
because i was in electronics shop
the man he told they dont use anymore audio transformer in radio receiver
what to use in place of audio transformer?
< Mentor Note -- thread moved to HH from the technical forums, so no Homework Help Template is shown >
please can somebody help me, how to calculate this 4 bit dac,
i know this one if input 184.108.40.206 5/2, 5/4 5/8 5/16 voltage
i dont understand nothing i search on the internet but i dont find...
i am reading one book over the "tenichians radio receiver handbook", but there was a stray capacitance
can somebody help me, how to calculate stray capacitance?
of what arethe standard value of stray capacitance
YES do you see the circuits
the stray capacitance is 7pf and 320pf...
Hello evervone can somebody help me, to calculate the cascade amplifier,
if somebody can tell me the formula? of to explain me? i am reading the book "electronics devices circuit and theory" page 201-202
i dont know how come the value 2.50v, 1.25v, 1,87v see the photo down...
; *** Listing 5.2 ***
; Program to illustrate one use of write mode 2 of the VGA and EGA by
; drawing lines in color patterns.
; Assembled with TASM 4.0, linked with TLINK 6.10
; Checked by Jim Mischel 11/21/94
Stack segment para stack 'STACK'
db 512 dup(0)
please can you help, explain me in easy way this circuit
normal must be
swith in position A
switch in position B
can somebody teach mm
how to find desired voltage gain of ce a transistor amplifier
wich is formula, i know the formula is rc:rl/re
but i want for example a voltage gain of 50
input desired data:
desired voltage gain 2.0 wich i want to know
f_min = 10 HZ
z_in = 50 K...