View Full Version : MFD
ravinder71
11-25-2015, 08:33 AM
I want ask what is square out and triangle out in basic MFD ,where to connect
edward
05-12-2016, 09:53 PM
hi
:)
UltraLRL
05-13-2016, 06:40 PM
https://upload.wikimedia.org/wikipedia/commons/thumb/7/77/Waveforms.svg/400px-Waveforms.svg.png
It's shape of wave.
could connect to antenna or Ground Probe.
Using a selector to change between waveforms.
reza vir
05-20-2016, 10:57 AM
see pic 8038
pin2 : sine
pin9 :square
pin3 :triangle
UltraLRL
05-20-2016, 04:35 PM
Are you Going to change the 8038 frequency by changing the capacitors??:nerd: No Way!!
Timing Capacitor Only determine the frequency range!!;)
USE A POT TO CHANGE THE FREQUENCY!
take a look at this simple 8038 generator:
http://www.eleccircuit.com/wp-content/uploads/2013/10/basic-circuit-of-function-generator-using-icl8038.jpg
The Basic characteristics of the circuit with a few components. By have VR1-potentiometer, R1-resistors and C1-capacitors are determined frequency output. Which has formula to calculate the frequency output as follows.
The Frequency output (f)
= 0.15/(VR1+R1)C1
Changing Frequency by turning the VR1 pot!
Another 8038 Generator:
http://www.circuitstoday.com/wp-content/uploads/2008/03/function-generator-circuit1.jpg
The frequency of the output wave form can be adjusted using R7 .It must be a 100K Log POT.
Another One:
http://www.zen22142.zen.co.uk/Circuits/Testgear/funcgen.gif
The IC contains an internal square wave oscillator, the frequency of which is controlled by timing capacitors C1 - C4 and the 10k potentiometer!
reza vir
05-28-2016, 11:42 AM
Information about IC 8038
reza vir
05-28-2016, 12:02 PM
http://s7.picofile.com/file/8253328476/8038.JPG
UltraLRL
05-28-2016, 01:00 PM
Stop copying Datasheet! I bet you don't understand what I told:|
Take a closer look at Fig 8 (Variable Audio Oscillator , 20 Hz to 20 Khz).
The Best way to change the frequency value is to use a pot.
The cap timer value on pin 10 only determine the Frequency Range!
(Like in Fig 8. the 0.0047uF and the RA=RB=4.7K ===== 20 Hz - 20 Khz oscillator)
pigeon
05-29-2016, 12:56 AM
I want ask what is square out and triangle out in basic MFD ,where to connect
hi all
i search bcp for this version
thank you
reza vir
06-12-2016, 06:38 PM
Stop copying Datasheet! I bet you don't understand what I told:|
Take a closer look at Fig 8 (Variable Audio Oscillator , 20 Hz to 20 Khz).
The Best way to change the frequency value is to use a pot.
The cap timer value on pin 10 only determine the Frequency Range!
(Like in Fig 8. the 0.0047uF and the RA=RB=4.7K ===== 20 Hz - 20 Khz oscillator)
I have brought all forms of use of the IC
reza vir
06-12-2016, 06:42 PM
hi all
i search bcp for this version
thank you
pcb
sirnon
07-04-2016, 12:14 PM
Good Tut
Thx for offer
sirnon
07-04-2016, 12:19 PM
ravinder71 (http://www.longrangelocators.com/forums/member.php?u=8584), Have You built this circuit?
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