Latest threads in Hobby Electronics Basicsshow only best voted threads
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High Current LED flasher
Could someone please walk through how this circuit works breaking it down into bite size pieces? I doubt that I will be able to find the germanium transistors so I am assuming that it can be tweaked...
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15 years ago
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ISD1700 help
Hi, I build the stand alone circuit for the ISD1750 Windbond chip. The circuit is pretty straight forward in the datasheet. I also seen a few threads in this forum talking about this chip. I was not...
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15 years ago
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music amplifier
I need to amplify the sound from a 9 volt dc audible probe circuit. The probe provides a very low musical melody sound that cannot be heard. However, another audible probe circuit that only beeps, is...
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15 years ago
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designing a radio amplifier
Hi guys. have recently graduated with mechanicanical engineering. Here i'm faced with challenge of coming up with amplifier. specs:input 12v, I
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15 years ago
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Multimeter or Oscilliscope
Hi, all I want to measure a DC output precisely. Do I use a multimeter or oscilliscope? I found there always are some minor voltage differences between the two equipments? Which one is better for DC...
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15 years ago
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Al Magnet Wire Motors
Now that my utility is calling Cu a "precious metal" in its anti-wire theft campaign what is the status of Al wound motor development? Supposedly the WWII era Al motors burned up easily but there...
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15 years ago
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VAC fan connected to VDC?
I just got a fan from radioshack and accidently picked the VAC fan because I was comparing noise specs. What happens if I hook it up to VDC? nothing?
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15 years ago
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how to get this PWM DC motor control to handle more power
this is the circuit in question, page 3 is the part I'm asking about, not the PWM circuit on page 1,2: The IRF4905 and IRFZ44 limit current to 74A and 49A respectively. The LM324 Quad op-Amp limits...
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15 years ago
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20 LED Chaser
Hello Does anyone have a circuit diagram for a 20 LED chaser please? All the ones I can find via Google seem to be about 10. Thanks Ian
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15 years ago
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Ladder diagram to CMOS logic
Hi group, +12v | NC | | |, .-. | IN -+--------,-=B4-------( X )-+ | =B4| | '-' | | | | | |NO .-----. | +---| |--+------| |--+ | | | | '-----' | | | RELAY | | T | | | --- | | +---o o--+ | | | (created...
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15 years ago
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Question about output stage
I want to implement this output stage i want to use it as class A amplifier and not as AB class. If i use it as class A, all mosfet are on during 2pi period of sinusoid, so Ioutmax is equal to...
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15 years ago
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Digital Logic: Lookup Table
For the question "How many unique functions can a 3-input lookup-table (LUT) implement?", I'm quite puzzled on why is the answer 2^2^8. I'm having trouble finding about the number of functions a...
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15 years ago
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Male and Female Connectors
Does anyone know where I can get a male connector and a female connector so that I can make an extension cable connecting an existing male connector with a female connector? Each connector has a...
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15 years ago
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A new student to electronics!
I will definitely be at this group a lot. I am glad I found this!!! Im sure I will have lots of detailed questions... thanks MikeBruce
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15 years ago
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LED breakthrough may revolutionize lighting
LED breakthrough may revolutionize lighting Purdue researchers achieve LED production breakthrough which clears the way for low-cost, high-efficiency lighting. LED light bulbs are about four times...
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15 years ago
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