Whither 4053_tercio.asy
I located the missing pieces. All of the examples work now. Try again, please. https://groups.io/g/LTspice/files/Temp/SwitchAna.zip All for now Sent: Sunday, December 22, 2024 at 12:29 PM From: "Jerry
Від eewiz · #156992 · 12/23/24
Whither 4053_tercio.asy
Hello John W. I have uploaded the complete Robertugo/SwitchAna files from my personal archive. It appears to contain all that is needed for the 4051, 52 and 53 parts. I hope this helps. https://groups
Від eewiz · #156954 · 12/22/24
adding extra large resistor for getting a good simulation result
John23 You could place a V source in series with one of the op-amp inputs. Set it to a few uV to see the effect of input offset on your integrator. Set the V source to the data sheet's maximum offset
Від eewiz · #156826 · 12/15/24
X axis limits.
Can you say "yoctosecond"? Sent: Monday, December 02, 2024 at 10:22 PM From: "Andy I via groups.io" <AI.egrps+io@...> To: LTspice@groups.io Subject: Re: [LTspice] X axis limits. On Mon
Від eewiz · #156711 · 12/03/24
LTspice 24.1 Beta Available Now
On 09/11/2024 16:15, Andy I via groups.io wrote: I agree with Tony. I'd like to see all CP properties be sticky and all .option modifications of CP properties placed on a schematic to alter the CP pro
Від eewiz · #156318 · 11/09/24
LED smiulation
Maybe a white LED such as an OSRAM GW JTLMS3.CM. Different package but; Forward Voltage at IF = 60 mA - 2.8V min 2.9V typ 3.0V max. 170mW typical dissipation at IF = 60mA All for now Sent: Sunday, Sep
Від eewiz · #155740 · 9/30/24
LED smiulation
If you have enough room to use a shunt cuicuit and one visible 20mA LED, then why not just use four identical visible 20mA LEDs in parallel. 80 mA current capacity and you don't have to design a shunt
Від eewiz · #155736 · 9/29/24
problem linking spice subckt directive to a model to make it portable
LTspice caches information about symbols in the .ASC file. Open test.asc in a text editor and search for "Altium". You will see the old, bogus, no longer applicable "M:\Altium" information. To fix it,
Від eewiz · #155516 · 9/10/24
problem linking spice subckt directive to a model to make it portable
There is a symbol and model that may be found here. https://groups.io/g/LTspice/files/Temp/eewiz_Bias_Power_Supply.zip Copy the symbol file and model file to your project directory. Place the symbol o
Від eewiz · #155513 · 9/10/24
negative programmable reference voltage model recommendation
Be very careful to fully understand Figure 6-16 or Figure 6-18 in TI's TL431 datasheet, whichever applies to your specific part. According to Figure 6-16 and Figure 6-18 both, the circuit given in the
Від eewiz · #155484 · 9/08/24
zener diode model acting abnormally question
Hello john23, take a look at the TL431. The most accurate 3.3V available for under 2 cents. LCSC part number C181103, 200+ at $0.0196 each. All for now Sent: Thursday, September 05, 2024 at 12:08 PM F
Від eewiz · #155457 · 9/06/24
PWL exported waves deformed
Have you tried exporting your waveform as a .WAV file instead of a .PWL file? Sent: Friday, September 06, 2024 at 9:40 AM From: "sebastiano venier via groups.io" <Sebastian0.venier@...
Від eewiz · #155456 · 9/06/24
Problems with creating a model (of CD4043)
Hello All, I uploaded a scan of the Motorola CMOS Databook Series C p3 (1978) in case anyone is interested. I know Andy is concerned about the groups drive space usage so I will leave it up for a few
Від eewiz · #154779 · 7/28/24
Problems with creating a model (of CD4043)
Spicer, If You search the groups files for CD4000 you wil find these (and more). https://groups.io/g/LTspice/files/z_yahoo/Lib/Digital%20CD4000/CD4000.zip, symbols for all of the parts. https://groups
Від eewiz · #154770 · 7/27/24
MMSD4148T1G spice model please
Hello All, Andy wrote: Then consider how manufacturing drifts over time. Like it or not, in 2024 they don't make them like they used to in 1975. I beg to differ. A great many of today's popcorn diodes
Від eewiz · #154709 · 7/24/24
MMSD4148T1G spice model please
Hello All Any diode exhibits the varactor effect. The capacitance of a reverse biased diode decreases with increased reverse bias voltage. Increased reverse bias expands the depletion region of a diod
Від eewiz · #154702 · 7/24/24
MMSD4148T1G spice model please
Hello All, I did a little research to make sure before stating, MMBD4148T1G is not a varactor diode. It is the ubiquitous 4148 switching diode. Also quite curious is the MMSD4148 model included with L
Від eewiz · #154700 · 7/24/24
Modelling of a DC Contactor
Nara962, The upper limit of your coil inductance can be determined by creating a series R/L circuit pulsed at coil voltage given in the datasheet and permitted to flyback into a diode. The resistance
Від eewiz · #154652 · 7/17/24
.MEAS RMS error
O.K. I have prepaired my meal of crow and am now prepared to eat it. Andy is correct. I was wrong. My error was not realizing that an RMS voltage value will produce an RMS current value. Assuming a 1
Від eewiz · #154626 · 7/16/24
.MEAS RMS error
Javier, Asking for the RMS value of a pulse wave is simply not a correct question to ask. Although mathematically correct the answer is meaningless. RMS applies only to waveforms that do not spend an
Від eewiz · #154623 · 7/15/24