28 Threads found on edaboard.com: 555 To Sine Wave
Linearity can be expressed by the amplitude of fundamental freq. component (freq. you want) relative to adjacent second harmonic freq. component.
Linearity is the best if your oscillator has only single fundamental component..
You can make a simple sinusoidal oscillator using a 555 oscillator and simple LPF..
Depending on frequency.. This
Analog Circuit Design :: 08.03.2007 09:14 :: ahmad_abdulghany :: Replies: 9 :: Views: 2397
My question is why you choose just 8038 , there is much simplier IC for this
like 555 or other
Analog Circuit Design :: 29.05.2008 16:18 :: zlatkoMM :: Replies: 6 :: Views: 2267
How often do you want your 5 cycles? Do you want the cycles to be switched on at a certain part of the waveform. It looks like pin 3 controls the output level, so link it to V cc with a high value resistor. Then a 555 timer chip can be used as a monostable, if you set its time to (250KHz = 4 microS period X 5) to 20 microseconds to the output of t
Analog Circuit Design :: 21.03.2011 12:45 :: chuckey :: Replies: 2 :: Views: 990
You can use a comparator and connect a variable DC voltage to one of the inputs to vary the trigger point on the sine wave.
Use the comparator output to trigger a one-shot such as with a 555 or a CD4098 to get a fixed pulse-width output.
Analog Circuit Design :: 27.02.2012 15:13 :: crutschow :: Replies: 2 :: Views: 387
I posted a link to another thread on this forum, in which some sugestions were provide.
However, you can try with that circuit :
Analog Circuit Design :: 13.01.2013 19:52 :: andre_teprom :: Replies: 8 :: Views: 662
If the transformer has good coupling, then over a wide range of frequencies the output voltage follows the input voltage times the turns ratio. At very low frequency you may saturate the core, or the transformer's low impedance will bog down your input. At very high frequency a variety of capacitance and loss effects will spoil it's performance.
Electronic Elementary Questions :: 09.10.2005 01:07 :: echo47 :: Replies: 1 :: Views: 1499
Ok, Here?s a circuit I?ve been working on, It?s a good experimentation circuit for a beginner. Could some of the experts please check my findings and advise me of my mistakes. This is only the third circuit I?ve ever done. I?m teaching myself as I go. However, I?m hoping that I?m right. I?m sorry I can give any detail values, my scope is old and I
Digital Signal Processing :: 29.03.2008 22:02 :: Areal Person :: Replies: 0 :: Views: 2103
Could you please help me to simulate this simple boost inverter design using Multisim: The original switch controller for my Power MOSFET is LM5022 (10 pins). But I cannot find this LM5022 in the library of the Multisim 8. That's why I used LM555 (8 pins) timer as a substitute.
And there my problem started. I tried to mix up the L
Hobby Circuits and Small Projects Problems :: 07.09.2008 09:50 :: joecla :: Replies: 27 :: Views: 21740
the main concern i post this circuit is i want to understand how the output of the circuit can appear as a waveform(sine wave or square wave is not my concern) with a positive and negative cycle.
what is the main factor or process that made the output of the the 555 timer which is a a square (...)
Hobby Circuits and Small Projects Problems :: 28.11.2009 11:19 :: roronoa :: Replies: 2 :: Views: 1750
A 555 IC makes a simple square-wave oscillator.
A CD4047 IC makes an oscillator by adding one resistor and one capacitor.
A Cmos Schmitt-trigger logic inverter or gate makes a square-wave oscillator by adding one resistor and one capacitor.
Electronic Elementary Questions :: 29.01.2010 14:59 :: Audioguru :: Replies: 6 :: Views: 1210
I am having a 600 Hz signal,
I want to generate Square wave by using 555 Timer IC and duty cycle to be 70 %
How to go abt it
Analog Circuit Design :: 25.09.2011 04:39 :: moonnightingale :: Replies: 8 :: Views: 3797
I am using Proteus Issis and I can't seem to show the pulsed output of an 555 chip with a simple 2 resistor and 1 cap in a simple astable mode. I can't show the waveform on the oscilloscpe in Issis. Any ideas
Thx in advance
Software Problems, Hints and Reviews :: 01.01.2012 14:47 :: flyingfrancisco :: Replies: 6 :: Views: 1646
This is my voltage stabalizer that I found in one of those old analogue electronics book. Need it for my project and had built it but it didn't work
I also need to use a h-bridge to convert my DC battery to AC sinewave. The circuit used is shown below
I cant seem to get both of em' workin
Power Electronics :: 09.02.2012 14:58 :: psyduck :: Replies: 2 :: Views: 1137
Dear goldsmith and sky_123
so your advice is first rectify the AC to DC, then invert it to 40hz signal, then rectify it to Square wave. The other method is transform the AC to 12V then drive a MOSFET with either a 555 ic at 40Hz or a TLP250 opto coupler which as a totem pole internally.
My question is the total amount of buzzers is about 100 pcs.
Power Electronics :: 02.07.2012 09:32 :: fengzujian :: Replies: 9 :: Views: 843
This design allows you to vary the output level (using R5) and allows you to switch between square wave or sine output. You can easily design the 30kHz clock source with a 555 timer.
Power Electronics :: 29.11.2012 14:54 :: E-design :: Replies: 5 :: Views: 368
I want to give 5V-1ms pulse to a resistive load using 555 monoshot.
First I am connecting 33 Ohm, then 68 Ohm and finally 100 Ohm as load.
Can I use the same 555 circuit for all the above three cases without any loading and voltage dipping problems
Analog Circuit Design :: 13.12.2012 12:22 :: vinodquilon :: Replies: 11 :: Views: 428
555 is the good and very much economical option
Analog Circuit Design :: 23.02.2007 08:35 :: jsps :: Replies: 7 :: Views: 1444
It should be possible to do this without using a tracking band pass filter, but rather a wideband shaping circuit. For this the 555 should be modified to produce 50% duty cycle output (can be done by adding 1 extra resistor in discharge pin) to keep the shaped sine wave distortion low. Next the charge/discharge ramps on the timing cap should (...)
Analog Circuit Design :: 09.05.2009 20:17 :: E-design :: Replies: 15 :: Views: 11558
Just use 555 timer & 4017 to make a quasi sine wave generation to fireup two push pull transistor. Varying the 555 frequency, you can get the different frequency. taking the output from a different tapping of the transformer, you can have different outputs.
Now you can approach in two ways.
1. First boost to regulated (...)
Power Electronics :: 18.03.2010 12:43 :: BADFLOPPY :: Replies: 2 :: Views: 772
I think the simplest way is a double 555 (556?) to use.
and these one
"555 tutorials": maybe their helps.
the first one as 1-3msec monostabil, triggered/started with the 10Hz signal
Analog Circuit Design :: 18.04.2010 07:04 :: karesz :: Replies: 2 :: Views: 724
I am trying to develop an RF Transmitter and Receiver for a ROVER project i am working on, the components i am using are a 555 Timer IC in Astable Multivibrator Mode to generate the necessary sine wave signal for the transmitter, and a Tank Circuit with further amplification using LM358 OPAMP for signal detection as a (...)
RF, Microwave, Antennas and Optics :: 01.07.2010 16:00 :: kpax_7999 :: Replies: 1 :: Views: 943
Hey guys, this is my first post in this forum. I am trying to design a circuit that produces and mixes a sine wave with a variable frequency in the audio range and its 1/n harmonics (n=1 to n=8) of varied (and potentiometer controlled) amplitude, so that I can approximate any periodic (2pi) function by setting the level of these harmonics.
Analog Circuit Design :: 23.11.2010 19:56 :: Betelphi :: Replies: 0 :: Views: 558
does you specification say you have to use a 555IC and analogue switch?
You could use a microcontroller to do both the modulation and demodulation - what bit rate are you working at?
Microcontrollers :: 02.08.2012 11:08 :: horace1 :: Replies: 4 :: Views: 622
The 555 timer IC can be used to do what you want.
Example hits using an internet search:
The concept is also known as a voltage controlled oscillator (VCO).
There's the question of linear response. Do yo
Power Electronics :: 19.08.2012 18:25 :: BradtheRad :: Replies: 1 :: Views: 334
How to generate a sine wave of frequency 50Hz +/- 10Hz controllable through a POT?
the amplitude can be +/- 5to12V, duty cycle 50%.
555 and 566 give only +ve wave forms, i need a wave with alternating polarity.
Electronic Elementary Questions :: 06.12.2012 05:46 :: pcsandhya82 :: Replies: 2 :: Views: 452
"will read 0.5" should have been "will read 0.555"
Analog Circuit Design :: 30.07.2013 15:25 :: Kral :: Replies: 4 :: Views: 209
You can use 555 IC as well as an OP-AMP
The 555 will be the generator and using OP AMP you can change the shape of the wave form.
Electronic Elementary Questions :: 29.07.2009 04:28 :: rituparnasaikia :: Replies: 7 :: Views: 6483
Electronic Elementary Questions :: 06.09.2011 01:52 :: kak111 :: Replies: 2 :: Views: 288