Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
questions about crystals
Hi all,
I have a problem with a microcontroler board wich seems to be out of order.
I don't have any Clock Output signal whereas the chip is well powered.
This board were fully functional there are 2 days. I have changed the crystal with an another and the board was...
voltage-controlled amplifier
Thank you Flatulent for your advice but the Jfet used as voltage controlled resistor are used with Vds>0 and Id>0 (cf the Jpeg file). I think I have to find an another solution. :cry:
voltage controlled amplifier circuit
Hi,
as for me, the problem remain the same. With a fixed gain amplifier, you will have Vout = K * Vin. With :
Vin a square zero centred signal.
K : gain of the fixed gain amplifier.
Vout will be zero centred and the Rds won't be the same for the positive...
voltage controlled amplifier
Hi all,
I have to design a *LOW POWER* voltage controlled amplifier. The first idea is to use a JFET in voltage controlled resistor and used it in an inverter Opamp.
I have found the LMC6041 Opamp from national.
The problem is that the JFET Vds=f(Id) characterisc...
Hi Humungus,
On the Picture, the voltage input source is V1, as said above. There is a probe calle V_IN, this is a voltage probe. You can forget it.
A desagree with you, the ciruit as a variable gain wich is a function of V5. The simulation results confirm.
I use a LMC6041 OpAmp fron...
Hi all,
I want to design a analog variable gain amplifier. So I use a JFET (n channel) used in a variable resistor. (cf SCH.ZIP).
Into the sch.zip, you can find the result from the simulation (wave.jpg). The gate voltage is polarized @4Vdc. The V1 source is a square 100Hz, 100mV PP with no...
Hi all,
I'm looking for information (app notes, schematics) for the design of a conductivity meter. The goal is to use it in aqueous solutions (0 -> 2000µS).
Does anyone have documentation?
Thks.
c.thibaut@laposte.net
using the smbus
hello,
I have got a mainboard with a smbus connector. (this is an epia via mainboard).
I would know if I could use this smbus as an I2C bus. So, is it possible to send data through this bus. Is it possible to drive an pcf8574 (I2C I/O) or read an I2C real time clock e.g.
Does...
isfet ph probe
HI all,
I would like to have information about ISFET probes:
Supply voltage
Pin configuration
output impedance...
all information to make a design with this sort of probes...
thanks
PS : I have visted a lot of supplier 's sites but never i find a technical datasheet... :(
Hi,
I have got 2 questions about DSP:
1°) have someone already bootload a DSP (TI c5402) via the HPI port?
2°) Does someone use the KERNEL/BIOS for real time application??
tchuss, :wink:
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
