Questions tagged [alternatives]

35 questions
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How to find replacement for a discontinued thermistor component?

I am in need of a thermistor with characteristics, such as those of now discontinued KTY84-130 (link to datasheet). I am after the exceptional linearity it features and also temperature range, up to ~ 250-300 °C. Its low price was also a plus. How…
James C
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Measuring AC with a DC offset using a digital multi-meter

I got a bit confused about how AC voltmeters on digital multi-meters work. I don't want to know about for example sampling method or conversion of analog to digital data. I need to know whether it can only measure the sinusoidal wave with only zero…
2
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2 answers

Safety Capacitors; Is it OK to fit an X1 in place of an X2?

I have a PCB which has a 0.010uF X2 safety capacitor fitted. It seems the exact part is now obsolete. Would it be acceptable to replace this part with a 0.010uF X1 safety capacitor? I believe a capacitors subclass is decided according to its…
313Ctron
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TLE2141 op-amp alternative (in DC load circuit)

I recently found a schematic for a DIY electronic load, which I think is based on Dave Jones's EEVBlog old DC load design (attaching the source link: Dynamic DC Power Load (updated), but I am attaching the schematic too): The problem is that it is…
ilp
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What can be alternatives to BF494 transistor?

I am currently working on a project which involves a RF Amplifier. I found BC494 to be quite suitable for the same. Though, I am looking for its alternatives since I couldn't get one of these.
2
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X2 capacitor alternative component or circuit?

My computer monitor (Samsung Syncmaster 732N) started to fail and it seems some capacitors have gone bad. They are all electrolitic but one is a CARLI MPX40 .47K275V-X2 capacitor, which where I live (Argentina) turns out is very hard to find. I…
jotadepicas
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Any more subtle alternatives for LEDs to indicate status?

Is there a low-cost, less annoying alternative to a buzzer or LED for displaying the status of an operation? I want my clock radio on at night, but it has this really annoying power indicator LED. I'd like to keep some form of power indicator, so…
Wyatt Ward
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Help find alternative AC capacitor replacement for refrigerator compressor

My mini fridge is broken and doesn't blow cold air. I'm suspecting it's the capacitor because it tested bad and I don't hear the compressor humming when turned on (all fan runs). I wanna try replacing the cap first before the compressor. I'm having…
TacoTanium
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Understanding opamp amplifier (simple) behavior - Having trouble understand basic opamp operation

I'm trying to understand the operation of opamps, especially how to amplify a voltage as illustrated in the images from a (for example) photoelement so these can be used a the following comparator. One circuit I found and seems to be working in…
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1 answer

How do we get the complex frequency of an exponentially damped sinusoidal function?

In my textbook, Engineering Circuit Analysis 8.Ed by William H. Hayt (Chapter 14, Section 14.1 page 536) I stumbled across a section explaining the complex frequency. The goal is to cover the concept of complex frequency when it comes to…
billyandriam
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Soldering alternatives for a relay

I have to confess that I'm not a handy person thus soldering is too difficult for me. I was researching on the internet about soldering alternatives but all of them are done for soldering 2 cables. I need an alternative for soldering a cable with a…
1
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1 answer

Relay Alternative

I wanted to see if I had any alternative to a relay for my project. I'm turning on a heating element that is powered from the wall: 120VAC (Max 30 Amps) Is their any alternative to a relay for this project? The contacts seem to be taking a beating…
1
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1 answer

What are possible alternatives for a depletion PMOS

I need a fast reacting way of discharging a capacitor and I figure a simple depletion PMOS is what I need. The time at which the gate has to have a voltage to keep the depletion PMOS closed is not important. It's taken cared of by the rest of the…
Dehbop
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Are there any alternatives to the 6522?

I want to build a legacy product (Mockingboard for the Apple IIe). I have built one on a breadboard using vintage parts. I believe I can replace the audio chip (AY-3-8912) with a propeller. But, I can't seem to find an alternative to the 6522 VIA…
cbmeeks
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An alternative to microcontroller as a clock generator

I use ATTiny2313 microcontroller to drive a linear CCD imager. That's all it does - an infinite loop that toggles six IO ports at different times. However, it is only a 20MHz controller. I calculated that I need about 200MHz microcontroller. At…
Nazar
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