T&L Publications

Hi, The case is a TO-92 with pinout BEC.

Hi, Which number does one use to cross reference an RCA semiconductor? The item in question is a transistor; RCA stock # 174374 and drawing # 1417405-004. This is the UHF prescaler Q103 in an MTT009 tuner in an RCA ctc 130 chassis. The transistor is noisy and emits horizontal white streaks in the pi...

Hi, I assume you gave the audio/control heads a good cleaning. I have experienced a couple of VCR's that would speed up and slow down at random in play mode and after I gave the audio/control heads a good cleaning, the problem went away.

I just tried the module on my atv and it works perfectly! Now if my new one goes out (from the same poor soldering) I won't have to lay out another $160. + taxes and shipping!

Just finished testing all the discrete components and they all check out good. Now to do the resoldering and hopefully tomorrow try it out and see if it works.

This topic is in follow up to my ATV ignition question that I posted back on Sept. 14 http://forum.servomagazine.com/viewtopic.php?t=8410 I managed to pick out and remove all the silicone potting compound that the CDI ignition module was buried in in an attempt to fix it. I succeeded in that the onl...

This chip has the Philips logo on it. There are a couple more numbers on it: CE6476 04 and below it: TnG0529F. The package is a standard 20 pin dip with .010" spacing.

Hi, Can anyone tell me what function a P87LPC764FN chip would be performing in an ATV CDI ignition module?

To answer all the questions, the project I have in mind is an electronic mouse trap. I would like to take an ordinary spring loaded mouse trap and improve on it. Infrared beam so the mouse does not see it and is not afraid of it and a solenoid to release the spring loaded killing bar. As for solenoi...

Hi, Can someone draw up a simple circuit using an infrared LED / Phototransistor pair either cannibalized from an old VCR or new units preferably from Digi-key or other supplier that sells/ships to Canada? I want the circuit configured so that when the beam is interruped, a small solenoid is activat...

The reason I asked this question is that I got tired of replacing the 15 watt bulbs in the exit signs in my church. They would burn out every 2 or 3 months. Since there are 2 bulbs in each sign, I decided to rewire the 2 bulbs in series and increase the wattage of the bulbs to get the same brillianc...

Hi, Can someone tell me what the life expectancy of a 25 watt 120 volt AC 1000 hour bulb is when operated at 60 volts AC? I will explain why I would like to know this information in my next post.

I received the new CDI module yesterday. Shipping was slow as molasses in January. I installed it and the ATV works perfectly; in fact it runs better now than it did before. I assume some component must have been failing for a while and that also explains why the ATV stalled for me and would not res...

After making a few phone calls, I found a distributor that stocks them, so I ordered one. It should be here today. Price $160 + taxes and shipping. The dealer I bought this atv from is a mom and pop operation and they no longer sell this brand.

Hi, As Ceasar mentioned, you need to click on the picture after it downloads to expand it and it will come up large and clear. The ignition module is the unnumbered square directly below #4 the magnetor. I have 12 volts coming in on the R/W wire, the B wire is grounded properly, I connected a dmm to...