Search found 117 matches

by Ken1
Sat Nov 15, 2008 2:49 pm
Forum: General Discussion
Topic: Cross referencing RCA semiconductors
Replies: 8
Views: 2414

Hi, The case is a TO-92 with pinout BEC.
by Ken1
Thu Nov 13, 2008 11:03 am
Forum: General Discussion
Topic: Cross referencing RCA semiconductors
Replies: 8
Views: 2414

Cross referencing RCA semiconductors

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...
by Ken1
Sun Nov 09, 2008 10:50 am
Forum: General Discussion
Topic: Sanyo VHR-9406 Capstan Motor Assembly......
Replies: 2
Views: 963

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.
by Ken1
Sun Nov 09, 2008 10:45 am
Forum: General Discussion
Topic: P87LPC764FN question
Replies: 9
Views: 2029

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!
by Ken1
Sat Nov 08, 2008 2:43 pm
Forum: General Discussion
Topic: P87LPC764FN question
Replies: 9
Views: 2029

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.
by Ken1
Sat Nov 08, 2008 7:46 am
Forum: General Discussion
Topic: P87LPC764FN question
Replies: 9
Views: 2029

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...
by Ken1
Sat Nov 08, 2008 6:48 am
Forum: General Discussion
Topic: P87LPC764FN question
Replies: 9
Views: 2029

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.
by Ken1
Fri Nov 07, 2008 1:38 pm
Forum: General Discussion
Topic: P87LPC764FN question
Replies: 9
Views: 2029

P87LPC764FN question

Hi, Can anyone tell me what function a P87LPC764FN chip would be performing in an ATV CDI ignition module?
by Ken1
Sun Oct 26, 2008 8:14 am
Forum: General Discussion
Topic: Infrared LED / Phototransistor circuit needed
Replies: 7
Views: 2063

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...
by Ken1
Sat Oct 25, 2008 4:30 pm
Forum: General Discussion
Topic: Infrared LED / Phototransistor circuit needed
Replies: 7
Views: 2063

Infrared LED / Phototransistor circuit needed

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...
by Ken1
Sun Sep 14, 2008 5:37 pm
Forum: General Discussion
Topic: Incandescent lamp longevity at half rated voltage
Replies: 18
Views: 4597

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...
by Ken1
Sat Sep 13, 2008 5:15 pm
Forum: General Discussion
Topic: Incandescent lamp longevity at half rated voltage
Replies: 18
Views: 4597

Incandescent lamp longevity at half rated voltage

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.
by Ken1
Sat Sep 13, 2008 5:11 pm
Forum: General Discussion
Topic: ATV ignition system
Replies: 12
Views: 3208

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...
by Ken1
Tue Sep 09, 2008 5:20 am
Forum: General Discussion
Topic: ATV ignition system
Replies: 12
Views: 3208

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.
by Ken1
Sun Sep 07, 2008 9:39 am
Forum: General Discussion
Topic: ATV ignition system
Replies: 12
Views: 3208

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...