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My government put lavacide in storm drains and ponds and now the mosquitoes (and bats that ate them) are gone. The larvacide does not harm birds, bees or animals. Modern technology is wonderful.
So the mosquitoes do not fly away when the see the bat coming at them? If a human touches the bat do they feel any pain? The circuit is probably an oscillator driving a step up transformer.
:D How does Electric mosquito Killer bat work, and send us the circuit as well as the part spec...:idea:
Dows anyone have an electronic mosquito repeller circuit. how effective are these circuits
Hey Denian! First of all make sure that your piezo has no internal oscillator. Only then you need to give external oscillations else dc would be enough. Check out this link as well Hope it helps! Giri
I think the insulation in the cheap Chinese transformer breaks down. We don't have mosquitoes in my part of Canada any more because the government uses a safe chemical in drains and ponds that stops baby mosquitoes from maturing. The bats (the real alive ones) are also gone.
The logic is Marx circuit, voltage multiplier circuit... This can be found in mosquito Killer bat circuit... If you go for mosquito killer bat and a Flyback Transformer it will cheaper and higher voltage than this.... Refer this
Hi All, Does anyone know how to troubleshoot Electronic mosquito Racket ? Because it can not generate the voltage to kill the mosquito anymore. So, how can it generate such a high voltage? And, the Electronic mosquito Racket requires only 3 dc volts (2 batteries of 1.5 dcV) to work. On the other hand, I discovered (...)
Someone used to tell me, it is not useful. Because one day mosquito will stand with it the noise. So, It still bite you even if you turn on the circuit. (T__T)
please help
what is the output of camera flash or dc?can we modify it to work as a stungun circuit?
Hi I am building mosquito swatter bats with 12V input dc can any one share the mosquito swatter bats schematic
ASA to ALL i am working on a car security circuit .... my ciruit works on 5volt i need internal battry backup in case some one cut car battery ....... anyone here want to share battery backup and its charging circuit, idea or any web link pls share. Regards
Hello, I need to find a way to simulate a Lithium-Ion battery pack. The pack that I have has 3 cells in series(11.1V nominal). I am going into manufacturing of a design which contains a complex algorithm for charging the lithium battery pack (constant voltage, constant current). I cannot use an actual battery pack because it would (...)
Hello Everyone, This is my first post here…Thanks for allowing me to join your forum… I have an idea for an electronic audio hobby project that I would like to build. It’s kind of a specialized device that doesn’t seem to be available commercially, so I would like to design and build it myself, just for fun, and I’
hi. I need circuit diagram for mobile battery charger, model no. JT-B50500 or JT-USB07, REV. 1.0
In Lead acid battery charger circuit, i m using 10ah battery, load is 2 head light,now i am using charger ckt by LM317 now the battery life is so bad , it's life is only f0r 6 months, buut the battery we are using is same as usd in ups. . .but ups life is 3 years.. .. so rectify the problem. . .
So I shall start by saying I am a HUGE novice in all of this. But I do love to tinker. Thanks to an unneeded PC speaker wire that I cut open to access the white/red wiring, I have a very crude way to provide direct recordings of all the various sounds from this toy. It's not
Hi friends i need to develop a battery cell Discharge circuit with a current rating of 6A. battery nominal Voltage: 1.8V battery End Voltage: 1.0V When the battery Cell is connected to the circuit, battery should start discharge and whenever the (...)
Hello Everyone I'm very new to this forum, so apologies if posted in wrong section. I wanted a backup for my wifi router (12V * 1A = 12W) during power cuts , which is for two hours in my place Hyderabad, India. So I searched the net and i found THIS[/URL
Hello sir here i got a circuit of emergency lamp , please check & confirm if it is all clear or need changes as usual ?? 101603 what changes we need if i replace 6 volt battery with 12 volt 1A ???????????? please comment
Dear all, I am in great difficult with swatter bat I purchased a new bat checked all the voltage in Transformer 3 winding, we found 725 volt ac in sec side where winding resistance was showing 245 ohms, primary winding terminal voltage was 16.5 V winding resistance was 1-ohm and 1.19 v at 0.3 ohms. All my defective bat showing same (...)
It realy P*&$$s me off that Sky sends a pulse in the video signal that prevents recording the film and sport. I know there is units that will remove them but does anyone know what they do to the signal and any circuit to make one.
Hello, i search for my amp project a preamplifer circuit with ultra low THD, this circuit are including the tone control and he make a Vu = 10 for the amp and i will use ops. Have everyonea idea for a circuit the have a ultra low THD? Thanks a lot Dark Angel
Need information how to make the PIC circuit with connector to an programmer. Programming should work even if the PIC circuit has power switched on. But should also be possible if the power of the PIC board is not availabel. I already have good info on programmer. Any one has a proven circuit design that works well?
Hi, I'm searching for the schematics of the I2K power inverter because the official download site seems to be down, so if you have it can you share ? I'm also searching for an efficient overcurrent / short circuit protection by measuring the DC bus Current (each phase of my three phase power inverter have an 100uH inductor in serie with it)
Does anyone have x.10 interface circuit? and or circuit that can send signal into main(AC) line? please suggest. thanks a lot.
Hello everybody !! I serach for a "PWM-circuit" for controlling a "Buck/Boost-Converter" !! Does anybody have a circuit !! Thank you ***************************************** Please don't reply unless you have useful information to add on this post. Any other replies are always welcome via PM.
Hi all I need a circuit to program the Atmel MCU AT89C1051 and AT89C2051. Can any one help me.
Anyone designed a circuit for CCD array to ADC? Looking for advice or ref design. I am using a sony ILX5xx series 5k pixel CCD, need to do an A/D conversion and get the digital data out. thanks Ahgu
Does anybody have some experience with designing a Snubber circuit and how to build them ?? I need one for a Boost Converter (fs=100kHZ, I~20-30A) !! Thank you very much
I need to design a digital circuit that will output logic 1 and lit an LED when the input analog voltage is within a certain range (say 2-5 volt) and will output logic 0 elsewhere. A schematic would be very helpful. Thanks in advance!
Has anybody a schematic for an easy and cheap working circuit, which turns of the light from a 230VAC/100W-Bulb by using a triac. Time for getting dark should be more than 2-minutes. P.S.:I´ve got no equipment for microcontroller-programming
I have an optical sensing system that uses three LEDs (LED1, LED2 & LED3) as transmitters. The lights from these LEDs are detected by three Photodiodes (PD1, PD2 & PD3). The signals from the PDs are passed through an Analog circuit that is common to all. Then the analog output is passed through three different digital circuits Dig1, Dig2 & Dig3 for
hello friends, This time I'm looking for an AC (60Hz) rejection circuit for a DC voltimeter any sugestions?? regards, 2000
I want to demonstrate a coupled oscillator circuit at graduate level. Can any one suggest some thing?
Who can give me a circuit netlist of 32768 Crystal Oscillator for spice simulation! My circuit cann't get up!
How can I simulation circuit with Xilinx Foundation 4.1? (there isn't any package) I remember that in Fondation 2.1 it exists... How can I do ? ***************************************** Please don't reply unless you have useful information to add on this post. Thanks
i'm looking for a circuit or a pic program to convert from irda to rs232! thanks! ***************************************** Please don't reply unless you have useful information to add on this post.Thanks
I want to design a automatic for automatic switch 220/110V,and this circuit will be low price and miny volume.who can help me. ***************************************** Please don't reply unless you have useful information to add on this post. Thanks
When I design PA,I find that using the typical circuit in the datasheet sometimes lead to bad result.Furthermore,the recommended microstrip circuit always show it's poor performance in EDA simulation.How do this happen?Would you mind tell me how I can get the correct circuit of PA design. By the way,the PA transistor I used were from (...)
Hello. My CATV firm use just video inversion for scrambling. I'm searching for a circuit to invert video image. I will insert the ciruit between VCR and TV. Could you plz inform me the circuit for video inversion? ***************************************** Ple
Hi The focus of our group is designing analog circuits for high integration. We have emphasized analog CMOS design techniques because an increasing portion of today's integrated circuit functionality is being performed in the digital domain by VLSI circuits implemented in a CMOS technology. Achieving high integration requires both all the (...)
i'm looking for a digital logic simulator for a small project of mine: should be a program easily interfacable from c (because the c code will generate the electronic circuits). in fact i'd prefer to have the source code and i probably will end up writing my own if i find nothing suited for my task. does anybody know about such a simulator (no spic
Hi everyone. I need a PLL circuit example. Does anybody have useful information about PLL? THX.
Hello friends, Does anyone know a circuit that really reaches 0V in a 0 - 30 V variable supply using LM723? regards, 2000
Does anybody have some pdf book about rf circuit design?
Looking for circuit diagram for Sharp fax F3600M. Mvbrgds Ludvig
Who can tell me where can find the audio amp circuit ( use 2k ~ 20k HZ) ?
Hi! I need a SMPS circuit for 90 to 275 VAC input and with output of +/- 7.5 VDC 500 mA. Could someone help me by providing schematic drawing and bill of materials for this. Thanks Bye!