Crystal oscillator Puns

10/m

This is just outside the quartz node cave to the northwest of the grasslands coal factory spot

I didn't go full ham on it and try and produce as many oscillators as it was possible to, given the current inputs, but I am still quite pleased with the results.

[Edit: Also there was no reason to, given there's a better alternate recipe I shall eventually unlock that obviates this factory. Also with the current inputs I could easily mirror the floors above the smelteries, if i decided I needed to, and still have iron and copper overflow.]

complete photo montage here https://imgur.com/gallery/G48d20k

also apparently I cannot spell "Oscillator" worth a damn, and am going to have to go back and fix all the signage. :D oops. [edit: note to self, remember to go do that]

Hello, I tried using the seam tap method for the little one's Sprk+ and what appears to be one of a pair of crystal oscillators has broken off inside. Those Sprk+'s are way more durable than the Mini and Bolt shells! The pins are too small and sealed inside a container so I can't resolder them. The part appears to be a 16 Mhz Crystal Oscillator, JKE brand, 3 pin, inside of a HC49/US package, similar to the product found at

https://www.sparkfun.com/products/536

but with a center ground pin. I am unable to locate the JKE brand part or original datasheet, and do not know what the capacitance and stability specs are to order a new one. I'm unfamiliar with the tolerances and range of specs of the ground/capacitance/stability for compatibility. Does anyone know which parts would be a suitable replacement? I will need to solder it back on, but it is one of the few through-hole parts so that's not too bad.

https://imgur.com/0RXWWKr

I have a 1.8MHz crystal (not full oscillator) for the 6502 clock.

How exactly should i make the oscillator circuit? i've been searching for a while but didn't find anything helpful.

Just getting started with the clock module kit. I plan on building out the whole 8bit system. But, I'm wondering if it's possible, after I get the system working with the clock module, to swap the 555 timer out for a faster clock system like a 1-2mhz oscillator. Or will it run into issues with the rest of the circuit bottle-necking and running over itself?

Due to the global chip shortage, we had to change the crystal oscillator on our product. Until now, we more or less used the HKC M3K03276NDHK1C600-RE02, but now we had to change to the EPSON MC-306 32.7680K-A5. The problem is now that we have about 10% of the parts we produce won't work. The crystal does not start to swing (I'm not sure if this is the right word for it, I'm not native English). We produce this part for years now and had never such problems. Do you have any idea what can be the reason for this behavior? (Pin 1 and 4 are connected to the PIC not 1 and 2 as shown in the schematic.)

https://preview.redd.it/v6vwuyge04n71.png?width=725&format=png&auto=webp&s=b3bba85679a9d82068eef2f3c8ae72fd209ace4d

So I had previously posted an issue I was having with a Colpitts Crystal Oscillator:

https://www.reddit.com/r/AskElectronics/comments/lgvmcr/colpitts_crystal_oscillator_overwhelming_noise_in/

Taking some learnings ans suggestions from the folk in this subreddit much of the original circuit was redesigned, settling on the attached schematic (https://ibb.co/s2TRbgY).

Normally, J1 is connected to an arduino. One arduino listens to two crystals at any given point in time and is needed to run for approximately a week at a time. For convenience, the arduino is connected to a networked Raspberry Pi so that crystal frequency can be monitored remoteley.

Power-wise, the Pi powers the arduino.

When connected to a battery, things seem to work as required. The crystal is tuned to 9 MHz and that's mostly what is apparent on the comms read out of the arduino. sometimes it is 24 MHz which is funily enough the max switching freq. of the logic AND Gate IC (IC2). I suspect this may be due to ashort which might also explain why it is a difficult fault condition to reproduce.

Here's the very weird bit: When running the Raspberry Pi from a mains source, e.g., wall wart, I get a zero read-out over comms. The Pi is still happily talking to the arduino, but there doesn't seem to be anthing downstream of that. I've been able to replicate this everytime I try it. Works fine when plugged into a laptop, plug the laptop into mains and off it goes.

Use a battery pack to power the pi and arduino - no problem. But then charge the battery pack from mains, boom, there goes the freq. count.

As I am not an electronics or RF savvy type, does anyone have any basic troubleshooting steps I should take to try to identify the issue? Does anyone know any known limitations using arduino and pi in this manner?

Thanks in advance!

Hello, I am in the process of building a keyboard, but like every other component in the world currently, the crystal (Seiko Epson X1E000021011900) is out of stock. I am eyeing the Yangxing Tech X322516MOB4SI as it appears to have the same tolerances (=-10ppm), load capacity (12pF), frequency (16M), and ESR (60).
However, I am unsure if it will co-operate with the same capacitors and resistors used in the board currently.
I am using: 5.1K, 22, 10K Resistors at 0.125w, and 100nF, 10uF, 1uF, 22pF Capacitors.
I believe they should work, but I would like a second opinion.

I've had some trouble getting reasonably priced crystal oscillators, especially ones that run at a lower MHz. Some guy on eBay wanted £12 but this one below is half that price delivered and arrived pretty quick in the UK.

1MHz Crystal Oscillator eBay - decent price

For example, this is a cmos device, not a simple xtal resonator.

https://au.mouser.com/datasheet/2/3/ASV-24925.pdf

Load capacitance 15pF or 50pF

It includes a cmos driver/inverter/oscillator circuit, So why is the output buffer sensitive to being loaded down?

Edit.

A followup question. Is the load capacitance a maximum that should not be exceeded to meet datasheet jitter and timing specs. Kind of implied by the, "High output drive capability (up to 50pF)".

Or, does load need to be matched, in the same way an ordinary xtal is (pcb trace + external cap, plus load) handled in order to meet datasheet performance. eg. because the although the driver is cmos, the output is still unbuffered (or lightly buffered - open collector) for design flexibility?

I want to solder an overclocking mod with a switch so I can switch between the fast clockspeed and the normal one.
I'm not sure what crystal to get though, I want to get a 12 MHz crystal and a new 4.194304 MHz crystal, because I assume i cant just re-use the original one?

If anyone could give me a recommendation or a link to good crystals, that would be awesome!

I'll be using either 25Mhz or 30Mhz crystal oscillator for RF transceiver.

Similar to circuit on p.14 here, except I'll be using a 868Mhz antenna.

https://preview.redd.it/reuul2s4ctk71.jpg?width=1283&format=pjpg&auto=webp&s=96fdac5a9768bbdd55fe0be6e65167397fd4ad20

So, in the circuit they don't show additional capacitors on either side of the crystal, I'm supposed to calculate proper capacitance of caps and place them myself, right?

So about that...

Is it as simple as this formula:

https://preview.redd.it/9247m1m9ctk71.png?width=447&format=png&auto=webp&s=c546cc337d87fcdab9cdbf15e519fc31247783d4

?

Because in here, they give a lot of different info. I'm not sure how inverting thing works... Like I know about phase, but... what? Like I don't mind reading up an article that deals directly with my issue...

I'm new to PIC. I want to start with a super simple LED blink program. It didn't work. I'll go over what I did:

I have the red lead of a common anode RGB LED connected to Pin 3 of my microcontroller. 5V and GND are connected to pins 32 and 31 of the microcontroller respectively. 14in 1 is connected to 5V with a 10k Ohm resistor, and pins 13 and 14 are connected to a 4MHz crystal, then connected to 1uF electrolytic capacitors to ground.

I connected my PICKIT 3 programmer to the correct pins according to every single tutorial I see online, fire up MPLAB IDE, set TRISA to output and set all PORTA pins to low in a while(true) loop.

I use the 'Programmer to Go' function of the IDE, I made sure to have the PICKIT 3 supply power to the microcontroller during programming. Then I unplug the programmer and supply power to the breadboard but nothing happens.

What am I doing wrong?

Hey guys I am going into teir 8 and want to make to Crystal Oscillator factory to end all factories. What is a good per min number to kind of play it safe? ( I was thinking 100 p/m)