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Arguably the most intricate and beautiful of the collection, this piece had an immaculate layout.
This is a large collection of analog tubes.
That package "U105" is really odd. I've never seen anything like that before, and have no idea what it is. U104 is the same type of thing. Given the size of the traces and caps near them, I assume they're power-related, and that's why they have such a huge package. Maybe some sort of regulator?
I illuminated this motherboard by shooting a green-geled flash behind it.
Copyright 2010, Amy Strycula
When I first looked at the voice circuits on the front, I thought there were lots of resistors and capacitors missing. So I took the board out and surely enough, it's a double-sided load. A crap load of really tiny (0201 or so) resistors and capacitors, plus some diodes and transistors.
it seems that the silkscreen is rotated or skewed, as you can see the edges of IC3 rectangle are not straight
the fab house will add their own ID on the board - this usually depends on your design. in this case, it's at the bottom right
An interesting corner of the main PCB, with RF shielding removed.
Taken with a reversed 50mm prime lens, taped securely to a filter adapter attached to my Canon S70.
My phone died recently. I think the charging circuit quit working, because it would recognize being plugged into power, but the battery never charged. It has since been replaced.
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■ 20만원 대 합리적 가격의 스마트 폴더폰
■ 자주 쓰는 앱을 설정할 수 있는 ‘Q버튼’, 넓은 키패드 등 편의성 강화
■ 시원한 화면 인터페이스, 간편설정 등 직관적인 UX 적용
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this is incomplete. An ECG based on a schematic from a Wright State University lab I described here. The Green/Yellow leeds going off screen are meant to connect to eletrodes, one on the wrist and the other on the foot. (a 3rd electrode should connect to ground). The AD620 IC Op-amp on the left handles initial gain. The lead from the larger capacitor (1000uF) can be put out to an oscilloscope and you should already see a heart sine wave. atm this leed goes to the first filter (the other IC in the picture). The two white wires are supposed to be a capacitor and resistor instead, but I do not have them on hand and need to get later. Finally, the orange wire going off the board is supposed to be the final output to an oscilloscope, with high,low and dual amplification having taken place. The grey wires are for negative and positive power sources. the resistor to the far left of the breadboard, is a 220ohm which can be removed.
Photos from an article about some different identifying marks on chips. You can read that article here.
My "cheap camera" for the vlog blunders cheap tog cheap camera challenge. I got it on ebay with 2 lenses I wanted to use with my Sony A58, and hadn't planned to use it at all, so it was kind of free ;). The DoF preview lever seems to be faulty, and I'm not sure if the aperture control works either, I'll see when I get the prints I suppose!
2012 Ford Mustange GT - V8 waking up and revving...
32-valve 5.0 L "Coyote" (4951cc) V8 engine (313 kW; 420 bhp).
Voigtländer Vitrona (1964)
Lanthar 2.8/50 in a four speed Prontor 250 shutter, 1/30 - 1/250 and B
Scale focus
The first camera with a built-in electronic flash:
The batteries and electronics are housed in a bayonet fitting, on the bottom of the camera, pistol grip
A switch in it controls the charge of the capacitor: continuously charged or just at the pressure of it
There's a flash ready indicator in the viewfinder and also on the top plate
GN 9 @ 100 ISO, recycle time 8 - 15 seconds
For automatic operation of the flash, 25 - 400 ISO, the lightning symbol, in the aperture ring must be selected, the aperture will relate to the focus distance
24 x 36 mm exposures on 35 mm film
Filter size 32 mm push-on
This camera was a gift of my cousin António Abílio Dantas Gomes
I invite you to visit my blog at Classic Cameras
A sub-collection within my vintage radio collection. They are by Emerson, Silvertone, Truetone, RCA and GE and they all work.
IBS Electronics, global electronics components distributor, is offering a comprehensive selection of electronic components and computer products. IBS Electronics is warehoused more than 1000,000 at any time. At IBS Electronics, you receive highest level of service, product selection, price and overall value unmatched in the industry.
Newly acquired. Plain meter-less prism. Just started using it. It seems to work flawlessly (light tight too). It has serial number 7279051 so it is from the early 70's, just before the final "Apollo" models. On this picture I mounted a 24/2.8 Nikkor-N, which I believe is from the late 60-s. The lens is AI-modified with rabbit ears removed, but this is no problem on this camera with plain prism.
a little project for my lab, a mouse that knows at which distance you're from it. We would like to explore if this information could be relevant for the system e.g. to highlight the cursor when you approach your mouse or to tell background operation to interrupt in order to release CPU for interaction...
I use a LDR for the 0 to 4 cm and a Sharp 2D120 IR range finder for 4 to 50 cm. The arduino code here:
// variables for input pin and control LED
int analogInputIR = 3;
int analogInputLDR = 4;
int LEDpin = 12;
// variable to store the value
int value = 0;
int value2 = 0;
// a threshold to decide when the LED turns on
int threshold = 500;
int threshold2 = 300;
void setup(){
// declaration of pin modes
pinMode(analogInputIR, INPUT);
pinMode(analogInputLDR, INPUT);
pinMode(LEDpin, OUTPUT);
// begin sending over serial port
beginSerial(9600);
}
void loop(){
// read the value on analog input
value = analogRead(analogInputIR);
value2 = analogRead(analogInputLDR);
// if value greater than threshold turn on LED
if (value>threshold) {
if (value2>threshold2) {
value = threshold;
}
}
int timez = (1350-(value+value2))/10;
digitalWrite(LEDpin, LOW);
delay(value);
digitalWrite(LEDpin, HIGH);
delay(value);
// print out value over the serial port
printInteger(value+value2);
// and a signal that serves as seperator between two values
printByte(10);
// wait for a bit to not overload the port
delay(10);
}
Another random side project, got the PCBs back today. See design files at github.com/sgstair/random/tree/master/hrv_monitor/pcb
IAP creative electronics lab; photo by Christopher Harting, 2009; cps creative_electronics; _DSC4763
“냉장/냉동/김치보관을 마음대로”
■ 신혼부부 및 1인 가구 라이프스타일 반영한 복합 냉장고 선보여
■ 上냉장/中서랍/下냉동 타입, 공간별 냉동/냉장/김치 보관 자유 설정 가능
■ 정창화 한국HA마케팅담당 “라이프스타일에 맞춰 자유롭게 사용할 수 있는 ‘디오스 김치톡톡 프리스타일’ 냉장고 통해 새로운 고객가치 제공할 것” 이라고 강조
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