Search results

Search Forums New Posts
  1. H

    Circuit You've Ever Made?

    I made a Clock Circuit for TTL Timer with a Transformer Plugged in the wall. Ran it thru a diode and it started with 60 hertz. I put a Devide by 10 on it and it became a one second Timebase. The led would blink once every second.
  2. H

    How to get low level from high (audio)

    Here is a couple of circuits without the Pot.
  3. H

    How to get low level from high (audio)

    The resistor between the + and - puts a load across the Floating Ground and the Pot just Varies that resistance causing the gain to go up or down. It has nothing to do with Phasing since the ground always stayes the same.
  4. H

    Help to identify a semiconductor

    It Looks Like a Resistor to me.
  5. H

    TPC 8103

    Where is the Datasheet? I need it to compare.
  6. H

    How to get low level from high (audio)

    Here is how they do it for a Car Stereo.
  7. H

    sensor

    If the slot is open on both sides you can use an led and a Photo Transistor. When the light shines thru the slot it will trigger the circuit.
  8. H

    sharp LM8V31

    Found a Goldmine of Info for you. http://www.taupro.com/Projects/Hardware/TuxScreen/mfgspecs http://www.taupro.com/Projects/Hardware/TuxScreen/mfgspecs/Sharp_LM8V31.pdf http://www.iptel-now.de/HOWTO/LM8V31/lm8v31.html http://www.tuxscreen.net/wiki/view/ScheMatics
  9. H

    solid state toggle switch

    http://www.discovercircuits.com/PDF-FILES/4013oneshots.PDF http://www.discovercircuits.com/PDF-FILES/dflip1shots.PDF http://www.discovercircuits.com/PDF-FILES/badgfls1.pdf
  10. H

    solid state toggle switch

    I found Several Datasheets and More Info on the aqz202 http://www.naisweb.com/e/relaye/semi_eng/pdf/semi_eng_use.pdf http://www.matsushita.de/home/www/eu/ac/download/datasheet/relay/pmos_1030dlde0301.pdf http://www.aromat.com/pcsd/aqz10_.pdf...
  11. H

    solid state toggle switch

    How about an easier circuit?
  12. H

    CY7C63101A Datasheet

    Here it is! ;D CY7C63101A.pdf
  13. H

    ECG or NTE

    NTE Data Sheet Locator http://nte01.nteinc.com/nte/NTEMasterxRef.nsf/$$Search?OpenForm Cross Reference Search http://nte01.nteinc.com/nte/NTExRefSemiProd.nsf/$$Search?OpenForm
  14. H

    12v Relay on When Car Running

    Like This?
  15. H

    12v Relay on When Car Running

    How would I get a relay to come on only when the Engine in the Car is running? Would I hook it to the Alternator? The Coil? There is no electric fan or computer. I am trying to help a guy on another BB Board. His problem is: He has a bad Ignition switch. He wants to install a push button...
  16. H

    Need some help.

    How about just Installing some MOV's and or Protection Diodes. Or even an Isolation Transformer or a Triac o Solidstate Relay.
  17. H

    Need some help.

    Is there a Timing or a Pulse Width Modulator circuit to turn the Coils on and off? I personally don't like MOSFET because it is static sensitive. You have 2 coils attached to a Static Sensitive Device. These coils cause Reverse Spikes as the Fields colapse. Also EMF Waves. I just don't like...
  18. H

    sound recorder

    Does the class have a Computer? You could use it as a Central console. If each has a Computer you are in Business. Voice Recorder Program built in.
  19. H

    fax machine with enhancement

    I use my computer printer as a fax.
  20. H

    NEED data sheet ic Sanyo Lc78637

    Still haven't found it. LC78637E QFP Digital servo, automatic adjustment functions, VCEC playback, CD error detection and correction (quadruple error correction), EFM PLL, SLC, 8 fs digital filters, 1-bit D/A converter, built-in low-pass filter for the D/A converter, VDD = 3.3 V...
Top