38 Threads found on edaboard.com: Bat Circuit
This bat does not look like it will work. You may as well use one method where a fuel is burnt to make carbon dioxide. This attracts the bugs and they fiy into a high electric field that kills them.
I am reminded of a product marketed around 1925 and was guaranteed to kill bugs. It was two blocks of wood. You placed the bug on one of the b
Hobby Circuits and Small Projects Problems :: 20.07.2005 01:35 :: flatulent :: Replies: 5 :: Views: 2530
this is a charger for bat.
and there is a feed back circuit.
Analog Circuit Design :: 21.02.2006 20:45 :: sunking :: Replies: 4 :: Views: 915
:D How does Electric Mosquito Killer bat work, and send us the circuit as well as the part spec...:idea:
Hobby Circuits and Small Projects Problems :: 13.09.2007 10:06 :: dmmahesh :: Replies: 3 :: Views: 11924
Modify an electric fly bat! Kills fly, wont kill you! Try it for your self! Try to hurt yourself first before try to hurt somebody else!
Hobby Circuits and Small Projects Problems :: 21.01.2008 22:01 :: rikie_rizza :: Replies: 3 :: Views: 1470
You can use LTC4412 IC from linear tech. for ORing internal bat with external battery
if power consumption is important - if it is not important you can use 2 diode..
All the best
The microcontroller specialist
Microcontrollers :: 14.11.2009 12:16 :: bobcat1 :: Replies: 5 :: Views: 1327
latest versions of matlab/simulink have lithium-ion battery models.
Power Electronics :: 21.11.2009 17:13 :: Mr.Cool :: Replies: 4 :: Views: 2622
There are many reasons for that.
1. Low battery
2. faulty transformer
Post the circuit or photo
Electronic Elementary Questions :: 04.12.2009 21:11 :: nandhu015 :: Replies: 5 :: Views: 7082
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’
Hobby Circuits and Small Projects Problems :: 26.02.2010 01:24 :: sandiegojoe :: Replies: 5 :: Views: 2233
The absolute minimum voltage on any pin is -0.5V, so I think you should consider Schottky diode, like bat-85, configured as follows:
The cathode of the diode is connected to the pin; Its anode is connected to GND .. see attached picture ..
Microcontrollers :: 25.04.2010 02:36 :: IanP :: Replies: 9 :: Views: 928
I have an approximate 0.8 - 1.2V input and wish to BOOST the voltage to at least 1.5V to charge a 1.2V Rechargeable NiCD battery. is this possible? (Does 1.5V make sense?)
What circuit or chip would any of you recommend to accomplish this task?
Thanks for any help or recommendations.:D
Hobby Circuits and Small Projects Problems :: 20.05.2010 09:32 :: musicstats :: Replies: 5 :: Views: 2005
I need circuit diagram for mobile battery charger, model no. JT-B50500
or JT-USB07, REV. 1.0
Service Manuals, Requests, Repair Tips :: 29.07.2010 13:33 :: abhay kulkarni :: Replies: 1 :: Views: 1281
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. . .
Analog Circuit Design :: 21.07.2011 07:13 :: gane26 :: Replies: 4 :: Views: 834
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.
Electronic Elementary Questions :: 30.12.2011 17:20 :: GB452 :: Replies: 6 :: Views: 384
It's difficult to see what's going on in your graphs as it looks like they don't all have the same vertical scale. I don't know about the oscillation, but I see a couple of other problems.
Firstly the caps are rated at 2.7V each, so for three in series the maximum safe voltage is 8.1V. Putting 12V across them seems to be asking for t
Analog Circuit Design :: 25.04.2012 22:28 :: godfreyl :: Replies: 3 :: Views: 227
I have modified basic lm339 comparator circuit to work as shunt mode solar charger.
Pin 1 works as low voltage cutout. When voltage drops, led goes off and tip127 turns off.
Pin 14 works as overcharge cutout. Normally led remains on & tip127 also. Current flows to battery through tip127. when voltage goes high led goes off and tip 127 stops c
Hobby Circuits and Small Projects Problems :: 18.06.2012 11:41 :: samshoppy :: Replies: 1 :: Views: 709
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 (...)
Power Electronics :: 10.07.2012 04:18 :: yviswanathbe :: Replies: 3 :: Views: 384
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
Electronic Elementary Questions :: 30.10.2012 10:39 :: iamsuperuser :: Replies: 11 :: Views: 1088
but there is an easy way and a not so easy way
the best way i found was to place all the bits in one folder
then compile the basic to asm and load the asm to proteus to
compile and run the circuit
you need to make your project folder inside the proteus folder
add the pa
PC Programming and Interfacing :: 02.01.2003 08:18 :: sick_man :: Replies: 2 :: Views: 2226
for a stream of data? no, not simple. for "On/OFF" or PWM signal, yes simple.
the reason is because data needs error correction, CRC sum checks etc. you must have a transmitter/receiver that his high noise rejection to retain good data. data must be 100% received or it is not at all.
if PWM signal, not so much a big deal. if you rece
Professional Hardware and Electronics Design :: 31.08.2003 21:35 :: Mr.Cool :: Replies: 1 :: Views: 2169
Help, I installed the design kit under ads(windows) , copy to the circuit\MasterModels folder of the design kit, excute errata_dos.bat and prefix_dos.bat , but when I simulate circuit ADS reports error as following:
Is my library version incorrect, or I have done wrong operation?
Could anybody help me?
Linux Software :: 29.10.2003 23:00 :: syncmaster :: Replies: 16 :: Views: 5532
:| (...scratch my head here)
for a) V(bat) = 30V it stays put! (ask Sir Kirchhoff if in doubt)
Calculate the whole current in the circuit
V(bat) = Vt = 30V
Rt = ((12Ω × 20Ω)/(12Ω + 20Ω)) + 8Ω
Rt = 15.5Ω
It = Vt/Rt = 30V/15.5Ω
It = 1.9354A
V(@8Ω) = (...)
Mathematics and Physics :: 30.09.2007 09:32 :: the_risk_master :: Replies: 5 :: Views: 460
Thanks for replay,
I solved the problem. I have got an idea from an expert and this is worked fine for me. The capacitor based charging is possible for high current bat. The circuit diagram below I used and this method charge the 120Amp bat approximately in 5 Hr.
I must say what I think about this design..
It's very ea
Professional Hardware and Electronics Design :: 19.07.2008 16:48 :: Diksi :: Replies: 10 :: Views: 1566
What are you driving the gate of the mosfet with?
is the mosfet high side or low?
Without seeing the charging circuit etc its difficult to tell but id guess the current draw during charging is greater than when in UPS mode? (particularly if the battery is low)
You have to be carefull with the ON resistance and also the intrinsic diode
Professional Hardware and Electronics Design :: 03.07.2008 05:41 :: quinn :: Replies: 4 :: Views: 1312
My chip is burned down, it was burned after a long operation during tests. It's a 1A charger IC. I have tested several tens chips, but 2 were damaged. I saw Supply current is current limited by my setting(2A), Vbat current is ~30mA, and then chip was burned down.
1) Could you help me to figure out what're the causes in your experience?
Analog Circuit Design :: 24.10.2008 21:55 :: welton :: Replies: 4 :: Views: 958
Enquiry: Re: help!some like oscillating.what's the it?
thanks.I have used spectrum analyzer ,and the I see in 980M and 1.8G there can be signal changing between -40--50dbm.I think if it's a oscillation ,it can be one power.not changing so much.what do you think
Your situation is clear. You have bat test setup and you are pickin
Analog Circuit Design :: 24.11.2008 10:48 :: Borber :: Replies: 18 :: Views: 747
By the way ,did you checked your batteries if they are not drained.
Service Manuals, Requests, Repair Tips :: 16.11.2012 00:44 :: ALERTLINKS :: Replies: 14 :: Views: 18054
Why you don't use a new DC/DC converter from 48 to 36 volts ?
Look for a schematics here, a square wave generator exiting a transistor ( saturated) with a 75% duty cycle, is not very stable bat for another DC/DC converter for lights is enough.
Electronic Elementary Questions :: 22.05.2009 21:36 :: brumi :: Replies: 5 :: Views: 1845
the problem is the soding great 4001 diode
you must use a schottky diode like a bat 85
not a silicon rectifier thats too slow
and will present slew to the slew ridden opamp
redesign around this
and post again
you can always add two in parallel to get the same current
most are 200ma bat85
Analog Circuit Design :: 10.02.2010 19:58 :: VSMVDD :: Replies: 18 :: Views: 1471
I think you need only a +/-5V supply for the Op= its done!
Added after 5 minutes:
These becouse DAC8831 has self an voltage output between 0V & Vref!
With the OpAmp as a buffer only you have it repeated/amplfied, bat if the OpAmp is connected into your circuit (with DACs onchip resistors); control
Analog Circuit Design :: 26.02.2010 05:11 :: karesz :: Replies: 1 :: Views: 425
Dear Jamil sb,
here we are purchasing complete pcb with programmed PIC16F72 ic.
This type of PCBA is consist of featured as,
1-complete switch over system with Relays etc, to maintain power failure and power restore.which is essential for UPS.
2-oscillator output to drive half bridge FETs.
3-cut off charging when battery reaches its max volts(
Business, Promotions, Advertising :: 21.08.2010 15:51 :: pnjbtr :: Replies: 6 :: Views: 5453
I am trying to interface a tc35i gsm module .
As datasheet I connected:
1-5 -> bat+
6-10 -> GND
18(RXD0) -> max232 (12-R1Out)
19(TXD0) -> max232 (11-T1IN)
and IGT to a circuit which trying to turn on the tc35i.
But I cant get anything hyper terminal.
When I set baud rate on hyper terminal to 115200 I and when I type I see something w
Professional Hardware and Electronics Design :: 06.02.2011 17:41 :: Sharagim :: Replies: 3 :: Views: 1141
There's a similar post out there about converting a battery powered baby swing to run off a dc power supply but since I'm not sure if it's cool to hijack someone's post I just started a new one.
Here's the link to what I'm trying to do: Russelldad's blog: Guest
Hobby Circuits and Small Projects Problems :: 21.12.2011 19:57 :: scott45 :: Replies: 3 :: Views: 1325
yes sir goldsmith i've read what you have wrote,, i can only use 24v battery,,,,,
Hobby Circuits and Small Projects Problems :: 18.02.2012 06:15 :: useless018 :: Replies: 20 :: Views: 2900
as you know if create a Current source with transistor and put the capacitor as load it only charge until Vc=VEE,doesn't take more voltage.
i want to demonstrate the capacitor integral voltage the increase with Current
Yes, that happens because no current source (or anything else) is a perfect. You may build a "perfe
Electronic Elementary Questions :: 18.05.2012 14:05 :: etmabreu :: Replies: 15 :: Views: 319
I am looking to Convert a Pulse Train w/ both positive and negative pulses into a suitable form to be used by an FPGA board. I have to also keep track whether the pulse was positive or negative.
Any help appreciated!
If you could provide a diagram of what you are trying to capture, we migh
PLD, SPLD, GAL, CPLD, FPGA Design :: 03.08.2012 14:38 :: willis... :: Replies: 3 :: Views: 431
I built a little battery pack in a .50 cal machine gun ammo container. Its 3 6amp hour 12v batteries with a charge controller, a switch and a 30 amp fuse. I charge it with about 8 sq feet of solar panels.
It works fine for running things like motors or lights. (A small fan for example), however when I put a 12v to 110v inverter on it, it
Electronic Elementary Questions :: 28.08.2012 13:32 :: bignose :: Replies: 12 :: Views: 593
I am trying to understand an aspect of my measurement of a current pulse into a battery.
so the oscilloscope ground is at the battery -Ve terminal. The pulse is from a capacitor being dumped.
so the negative going Ch B which is the voltage across a resis
Power Electronics :: 14.09.2012 01:35 :: xaccto :: Replies: 5 :: Views: 278
Hello! I am searching for 3-pin Schottky diodes. Two diodes connected in series in one SOT package. Diodes i use recently worked okay, but mixer sensing is poor. I searched in internet for rf mixing diodes and found bat15 and some other diodes designed specially for rf mixer usage. But i cant buy them. So i am searching for such diodes in SOT packa
RF, Microwave, Antennas and Optics :: 06.11.2012 21:24 :: Terminator3 :: Replies: 7 :: Views: 406