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37 Threads found on edaboard.com: Vibrator
Hello, in this multibibrator if the neon bulb is replaced with a variable capacitor and a suitable RF transformer is used, RF damped waves are produced frequency is determined by the resonance of the LC and the d
I am looking to get advice to find following: 1) A very compact cheap bluetooth receiver (only bluetooth data receiver no need to receive audio). I understand that there tonnes of such receivers in market but I want only data receiver so I don't want to spend more on bluetooth audio receivers. Can some one please let me know smallest c
Certainly the vibrator is no problem, just about all the ones fitted in mobile phones will work. They are simply tiny motors with weights on the shaft to throw them out of balance as they turn. More volts = more shake. There are many on Ebay and through normal component distributors. However if you have to fit the rest of the electronics, particul
I would use a dual one shot with suitable buffer and current limiter R to a few Watts of white LEDs, over driven but not to exceed max I with < 20% duty cycle. 1st one shot in retriggerable multistable vibrator or oscillator mode adjusts f vs R over a very wide f range with suitable RC values and Rmin limit. Then output drives 2nd one shot in asta
It is called Haptic Feedback using rotating miniature offset balance motor.
Hi, we have a small machine that sends parts from hopper to conveyor line. It uses Rodix Feeder Cubes as a controller for a DC agitator/vibrator for the hopper. One input sensor that sends ON signal to the hopper controller is getting erratic power supply (24V). Whoever installed this machine did not label wires or cap off wires that are
The original vibrator works only with one continuous tone of 50Hz to 60Hz. Audio rarely produces these frequencies and produces many other frequencies, and produces many frequencies at the same time. Also audio does not produce a tone of from 50Hz to 60Hz continuously. In order to see the waves on the string then the tone frequency, length of the
Hi All I want to design a low power electronic locking system. For this I need a micro DC motor that should operate around 3V. Any suggestions on this ? Thanks for the help
Hi, Could any one explain me what is happening in this circuit, This circuit is controlling an vibrator with the help on magnetic coil, When Potentiometer "R7" is adjusted Vibration is increased or decreased proportional to the Potentiometer, but I couldn't understand what is controlling this Thyristor U2. I couldn't find any changes in w
Dear All My Friends I design a digital dimmer to control a vibrator ... it works but i found that around the phase angle 90 ( small angle before and small angle after) the power from dimmer is big different .... so i look at this and found that the power with phase angle control is not linear .... like s shape for the phase control delay from 0
cascade a 30 and 5 second vibrators so that the first one can be fired after the 30 secs.. and that triggers the 5 sec vibrator at output...
Hi Ameya You can use vibrator motors (say pager motor or cell phone vibrator motor) if weight of your bot is less. you will need to do some calculations to see if they fit your requirements. These motors are readily available in India. I'm sure you'll find a good deal of them at lamington road. Or just go to any mobile repairing shop, and ask for
Try to use 555 IC as Astable vibrator. Few Days back i had achieved 161Khz using this.
Hello guys, I am new here. I need some help with an old WWII radio power converter, PE-104. Can anyone help me design a replacement to the selenium recs in the picture below. Red arrows show the power rec and ballast rec. What diode would be best? Input power is either 6 or 12 volt. Output voltage is 1.5 on the recs. The 84 and 51 volts are
hii all i m working on a project in which i have to control vibrations with dc signals(PWM) instead of 50Hz ac. i m using an ac vibrator. i m using TDA7294 amplifier to drive ac vibrator and at input i m applying 50hz pwm. problem is that i want 50V maximum output for vibrator... my doubts are 1. is TDA7294 is right choice. 2. (...)
some kind of vibrator?
Construction: The tray was made of a food container. It stands on feet made of a foam pipe insulation. The vibrator is made from a fan. There is some glue between two blades ? that makes a pretty good beating
If it is that, you already have a bell and need to activate it, then you can set up the 555 as a monostable vibrator and use the output to turn a relay on/off (depending on configuration) to turn the bell on/off. If you need to make a bell, you can use a 555 to act as a monostable multivibrator that activates another 555 set up as an astable multiv
hey guys! Hi In astable multivibrator , capacitors used as positive feedback. if you reverse their polarity, they will destroy(their dielectric) the feed back road is from collector of q1 to the base of q2 . thus collector is more positive than base . because of that , the potential of base is: base emitter voltage( because emitter is grounded)
Hi, I'm currently trying out a new habilitation theory. What I want is a vibrator that can stimulate my skin with a frequency range of 4-400 Hz. I also want to be able to controll the intensity (power) of the vibration. A requirement is that the device (module) is quite small (like the ones in cellular phones.). I've searched etc. but
hi I want to simulate firearm shock when shooting a bullet. Suppose we have a gun that when triggerd with someone must produce a shock as a real shock when shooting a bullet. Maybe i must use a vibrator as ones used in PS2 game pads but i want more force. Can you tell me some idea and where i start ? Thanks for your support.
Hi. I have a 24V DC line and on top of the DC line I have a signal (0 and 5V DC). I now need to trigger from the signal. So basically I want to "ignore" the 24V DC. Can I do this with the NE555. Must my trigger be clamped to 24V DC so that it can trigger from my signal??? Or how must I connect this? (I need my output pulse period to be 0.1042ms- bu
hi..i have done a project on force sensing gripper. as per my project motor should stop when the vibrator sensor reaches a particular input value as shown in below program. but it keep on changing direction when the sensor is high.. i have to finish this project with in 10 days.i have uploaded my video in following link....
Is it multi-vibrator kind of stuff.
Here are a few thoughts: - Vibration can be sensed directly with an accelerometer. - Vibration frequency will be the same as the revolution rate of the motor. So, you could add a tachometer to the motor. Are you using a pager vibrator motor with eccentric weight? If so, the weight is probably made of steel, and you could detect it's revolu
I have to design multivibrator using BC 547 to get output of 1 Mhz... I tried a lot but i am not getting the desired output...can anybody tell me what values of registor and capacitor to choose to get 1 Mhz Output Thanks..
The black epoxy blob marked "???" is likely a microprocessor COB (chip-on-board). The logical solution is go the DIY microprocessor route. Not very complicated if you have experience...which I doubt you do. Beyond that, I would just go out and buy another vibrator. ;) Ken
Hello I'm new to the forum and a total novice in electronics. I would apprecriate any help that can be offered about my project. I want to build a small metal detector, instead of having it beep or make any kind of noise when it detects metal I would like to have it signal by vibrating, or some element connected to it vibrating. I have done
Hi, can any body help me, how to make vibrator controller circuit with voltage output 0 - 110VAC and frequency 50Hz?? the voltage output can be adjust from 0 - 110VAC using potentiometer. Thanx
Hi, Just another thought, cann't you use vibrator motor used in cellphones, they are small elegant low voltage DC motors, which can easily be controlled by a potentiometer/transistor and has no shock hazards? Regards, Laktronics
Hi Folks, I met a big problem of low frequency interference to TX with TX IF frequency around 100MHz. A vibrator with magnetic flux attaching to RF shield case via sponge. Before doing a experiment, there is a doubt for me about how to translate this magnetic power into RF power ? Although by memory that magnetic field can generate electri
Hi Folks, Here I have a GSM RF module or system shield with shield can. It has IF VCO and its TX IF frequency: 640 MHz and 80MHz (640 by divider to 80). And I have little choice but to put vibrator on top of RF shield can. Here now I have no idea about magetic flux or H field induced by normal vibrator inside ? Will "u" value be different ov
how to select the damping ratio for a circuit to design a snubber circuit without affecting the strength of the vibration in triac ac controller?:cry:
It's a tiny motor with an unballanced load on its shaft. See here:
i am using a triggering module for single phase vibrator, this inductive load affects the zero crossing detection of the supply voltage,so i have an intermittent output voltage, and the control voltage 210v t0 230. i have used a lamp 100W in parallel and the problem solved but the heat generated by it is too high in the panel.
Salam, This may help u Just replace the 4047 multi vibrator with its RC connection with your Atmel I've tested this circuit and it works it gives me 185 V RMS , but unfortanately i stoped further enhancements of this circuit but generally it is working well. Hope i've helped u
the 555 monostabil multi vibrator use same design as with astabel multivibtator exept that the monostable multivibrator require input from pin no 2 of ic 555 and if there's pulse coming from the pin it will oscillate


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