T&L Publications

On the voltage/current discussion; The Inductor technically stores a magnetic field, which is able to move electrons (create a current) as its size changes with time.(As the field enlarges, the 'lines of force' cross the windings of the coil, and either absorb or yield energy)But you really cannot h...

Muchas Gracias, Externet !!!

Is it the Vicodin, or is it Ed' grammer I'm reading of about it in this here posting here??

I can't find this info in any of my textbooks. What are the advantages(pro's/cons) between the different tpes of capacitors? ( Mylar/Mica/ Tantalum/Ceramic/Electrolytic) My understanding is that Tantalum is for low- leakage, Ceramic for Hi-Freq.,and Electrolytic is for Hi-capacitance in a small size...

A few more things to consider with Ford gauges: A) many older vehicles had a 5V regulator on the edge of the PC board which looks like a cicuit breaker. when it fails, all the gauges go wacky. B) SOME use a shielded wedge-base bulb (like a #194,but not) as a resistor/regulator. This is more common o...

WITH TWO DIODES AND A COUPLE OF CAPACITORS, YOU CAN MAKE A VOLTAGE DOUBLER. THE ONLY APPLICATION
I WOULD SEE THIS AS USEFUL WOULD BE AS A CLASS-C
AMLIFIER, BOOSTING VOLTAGE ON THE OUTPUT SIDE OF
A FREQ.MODULATED RF AMP. BUT I DON'T THIK YOU'D
GET POWER AMPLIFICATION, JUST VOLTAGE BOOST

BOTH EXCELLENT. I MIGHT ALSO TRY USING A HEATER-FAN RESISTOR FOR THE FAN MOTOR. IT WILL TAKE THE
CURRENT IF USED AS A DIVIDER ( WORST CASE, ULTRA
CHEAPO OPTION.) THEN REGULATE THE TAP CLOSEST TO
YOUR 3V.

ALL EXCELLENT !! BUT ISN'T THE LM358 AUDIO AMP CAPABLE OF A GAIN OF 200 ?? I SUGGEST READING "PRACTICAL ELECTRONICS FOR INVENTORS"(AVAILABLE @ BORDER'S, OR THROUGH NUTS-VOLTS BOOKSTORE). IT SHOWS A SCHEMATIC. I ALSO SUGGEST "THE HISTORY OF PI" BY PETR BECKMANN. GOOD READING FOR T...

FIRST OFF, SUPER-BRIGHT LED'S OR LOW-POWER BULBS FOR OUTPUT, DRIVEN BY TIP-29C OR 2N3055 TRANSISTORS. RELAYS SHOULDN'T BE NECESSARY. AS FOR THE TIMERS, A 556 IS TIMED BY AN EXTERNAL R/C NETWORK, SO I WOULD:\ TIME 1/2 FOR 2hz FREE RUNNING FOR THE BLINK SET THE OTHER 1/2 FOR STABLE HIGH OUT AFTER 2-SE...

what about a mathematical model and simplest circuit design for a bandpass Rf filter , say 10Khz to 900Mhz, which will start with the strongest signal, store frequency,modulation type, and signal type ( 77Mhz/FM/digital data ), and then disallow that frequency, and proceed until all signals in the m...