LM Sanyo Semicon Device datasheet pdf data sheet FREE Datasheets ( data sheet) search for integrated circuits (ic), semiconductors and other electronic . LM min typ nax unit. *. mA. mA. mA. MA. mA. *. * Electrical Characteristics at Ta= 25°C,Vss=0V,VOD=-9 to – 15V. Output ‘H’ Level Current. ALARM. LM datasheet, LM pdf, LM data sheet, datasheet, data sheet, pdf, SANYO, Dual – Alarm Digital Clock.

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Clock Accuracy Whentimeout mechanism. I wouldn’t datzsheet about it smoking. I purchased a clock radio from the US I live in Australia. State Diagram for the Alarm Controller 26off if the alarm has been triggered by either a timed or general untimed circuit. For a better experience, please enable JavaScript in your browser before proceeding. Each alarm has its own alarm output signal.

Potentiometer Questions Started by norbss Yesterday at It would be great if I could put it to some use. Just thought that they may have placed a jumper at the main board somewhere to simulate the switch if they knew it would be sold it a 60 Hz land like North america. Of coarse, there is japan which is 50hz in the west and 60hz in the east. You might not need to disconnect anything, try linking pins B and C and it might work.


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Datasheeet for all the information you have provided with regards to my issue. I’m assuming now all I need now is short the power to pin 25 or 26 and test it out. I cannot remember the IC id most of those old clock radio’s used.

A “1” in bit-7 will identify the alarm circuit. LMLM I went ahead and checked the pinout.

LM datasheet & applicatoin notes – Datasheet Archive

Also, for 50Hz, I think you want to tie pin 26 to ground Vssnot power pin. Or tell me what I need to buy to make it run at 60Hz? What clock IC does it use? It appears that the black ribbon cable is 4 wires and there are 5 points, one of which is your red trace line adtasheet “a”. So in 50 Hz land common “B” gets connected to “c” which is what you have now without the missing part. That’s why I’m wondering if your notations are correct.

I then purchased a step down converter so it would work and it does just fine however the time is out by 10 seconds. IIRC, there was 2 version’s of the chip. Have you checked the continuity datashewt pins A and B?

Hi Eatasheet Apart from doing some basic electrical work back in high school 13 years ago it would be safe to say that I have lost some skills and require some assistance.


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I found a datasheet for a TMS Is it possible you miscounted the pins? This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Media New media New comments Search media.

Click here to register now. Try Findchips PRO for clock alarm circuit diagram using lm I found 2 chips one on the radio and the other just behind the display of the clock.

Welcome to our site! Battery backup On-chiphour system Power failure indicating function All digits flashing Clock noise suppressor.

On the back of the clock radio there is a place where it looks like a switch should be to allow me to change between 50 and 60 Hz. Here is the pinouts. I suspect that there may be more missing than one might think if the distributors knew that the clock would only be sold in a area of 60 Hz.

Bender New Member May 26, The red line is obscuring the solder points.

The has 28 pins. Previous 1 2