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TLV3501 single-channel high-speed comparator 2021 spring and summer new fro Max 57% OFF frequency meter

TLV3501 single-channel high-speed comparator frequency meter fro

$10

TLV3501 single-channel high-speed comparator frequency meter fro

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Product description


Specification:

Condition: 100% Brand New
Item Type: Frequency Meter Front End Shaping Module
Material: Metal
Delay Time: 4.5ns
Power Supply Voltage: 2.7-5VDC
Input Voltage: 8-1000mV (Effective Value)
Output Level: Rail-to-rail output, can directly drive TTL / CMOS level
Input Frequency: 1Hz--120MHz, the minimum can up to 1Hz
Interface Form: SMA Female Head (Male Screw Inner Hole)
Input Impedance: 20K Ohm
Product Use:
1. Sine-Waves to Square-Waves
2. Zeroing-Crossing Comparator
3. Universal Comparator


Package List:

1 x Frequency Meter Front End Shaping Module

TLV3501 single-channel high-speed comparator frequency meter fro

Friday, 13 April 2018

(10 pcs) M24-1.5, DIN 935 / ISO 7035, Metric, Slotted Castle Nut

Image: Antonio Rodríguez Arduengo
Uroplatus ebenaui
Demons get such a bad rap these days. And... all other days, I suppose. But look at this cutie! Surely he wouldn't hurt a fly!

Image: Alextelford
Hmm? Oh. Turns out he would eat a fly. OK.

Image: Frank Vassen
But I bet he does it in the cutest way possible! The flies last thoughts would be something like, "This is actually kind of adorable. It's way better than getting eaten by a spider."

Image: Frank Vassen
The Spear Point Leaf Tail Gecko is a member of the genus Uroplatus, the same as the Satanic Leaf Tailed Gecko (U. phantasticus). While it's great that one species got the moniker, to me they're all equally and wonderfully Satanic!

This species is found only in a tiny patch of northern Madagascar, as well as just off the coast on the even tinier and delightfully named island of Nosy Be.

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Image: Antonio Rodríguez Arduengo
They hang out in the trees, using their amazing camouflage to hide in plain sight during the day. At night, they wake up to hunt insects.

Image: Antonio Rodríguez Arduengo
The Spear Point gets their name from their tiny little tail which looks like something someone dug up from an ancient battlefield.

Image: Rob Meades
Despite that miniature tail, the Spear Point Leaf Tail Gecko is the biggest species in Uroplatus. It still only reaches about 7.5 cm (3 in) long, though. That's probably a good thing...

Image: Cédric de Foucault
You wouldn't want a face like that looming over you!

Wednesday, 11 April 2018

Clinging Jellyfish

2.45G 433M 1575M 900M 1090M Bandpass Filter Stable 433MHz SMA In
Image: WoRMS Editorial Board
Gonionemus vertens
Jellyfish are known to be inveterate drifters. They love nothing more than to hang out in the water column, the careful fluttering and pulsing of their bell all but powerless in the face of a mild current.

But what if a jellyfish doesn't want to do that? What if they find a nice plot of ocean, verdant with plant life, the water a particularly delightful shade of blue, and they just want to settle down for a while? One tiny Hydrozoan has the answer.

Sunday, 8 April 2018

Striated Frogfish

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Image: Silke Baron
Antennarius striatus
Pac-Man was always such a harmless soul, lost in the labyrinth of his own mind, chased by ghostly memories of his past and finding succour in a trail of psychoactive dots and the occasional fruit. He always seemed so happy. Or at least preoccupied.

He was never the same after the werewolf attack. He's so grumpy now. And he's completely abandoned vegetarianism...

Friday, 6 April 2018

Aspidistra

Image: Standard Motor Products DS-1630 Door Jamb Switch
Aspidistras are famous for their ability to withstand and even flourish under the kind of neglect that would usually end in the crinkly, brown-leafed death of most plants.

But that's no excuse for neglecting their absolutely amazing flowers!

Wednesday, 4 April 2018

Toxodera


Toxodera are mimics of the living and the dead!

Sunday, 1 April 2018

Nightmare Catcher

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Image: Frank Vassen
A Nightmare Catcher flitters through the rainforests of Bolivia, sticky net in hand.

Some say she feeds on nightmares, her gut so full of concentrated horror that the mere sight of her causes night terrors.

Others say that's silly, and she probably eats moths.

Still others say, "Yeah, that's what I meant. I actually have a terrible phobia of moths."

The IUCN's List of Threatened Species lists the Nightmare Catcher as 'Be Concerned. Be Very Concerned.'