BradtheRad -

15th June 2018, 02:47

BradtheRad replied to a thread i need simple water level indiactor in Analog Circuit Design

Transparent radiator hoses are available.

15 replies | 386 view(s)

14th June 2018, 02:40

BradtheRad replied to a thread Efficient battery charging on solar, at sea! in Power Electronics

It is better for appearances to arrange for all charging to be taken from the solar panel (in daylight). If anyone can draw juice from the battery...

3 replies | 123 view(s)

12th June 2018, 07:55

BradtheRad replied to a thread [SOLVED] Design precaution of 78xx and 79xx series regulators in Power Electronics

An option might be to install a voltage multiplier. It can be done with 2 diodes and 2 capacitors.

53 replies | 1098 view(s)

12th June 2018, 07:27

BradtheRad replied to a thread low-pass RC filter design with attenuation known in Analog Circuit Design

Graph of ordinary RC low-pass filter (first order). The rolloff curve occupies a comparatively narrow range of the frequency spectrum. At low...

11 replies | 257 view(s)

11th June 2018, 07:08

BradtheRad replied to a thread low-pass RC filter design with attenuation known in Analog Circuit Design

The combination of capacitor and resistor create a time constant (R x C). This is associated with a phase change. The phase difference results in...

11 replies | 257 view(s)

11th June 2018, 06:52

BradtheRad replied to a thread Looking for this 8-pin connector in Mechanical Engineering and Design

Connectors like that are common in vehicles but it's not likely you'll find an exact match. The variations are so numerous, as to spacing, diameter,...

3 replies | 1279 view(s)

11th June 2018, 04:36

BradtheRad replied to a thread Underwater electrode in Elementary Electronic Questions

Stainless steel is a common material in kitchenware. To cut it with a hacksaw is difficult. Power tools make it easier. For instance a metal cutting...

38 replies | 999 view(s)

11th June 2018, 04:03

BradtheRad replied to a thread How to let current source has linear V-I and can supply enough current? in Analog Circuit Design

A simple transistor is a method that gives linear response. However it is resistive drop therefore it generates heat. You may decide that several...

3 replies | 151 view(s)

11th June 2018, 01:04

BradtheRad replied to a thread Regarding Current Monitor Circuit for Charging Status in Analog Circuit Design

The frequent advice says you should only charge your smartphone from the charger designed for it. Is the battery Li-On? These are the type in recent...

1 replies | 120 view(s)

11th June 2018, 00:44

BradtheRad replied to a thread Cannot uninstall ISE Xilinx 14.5 in Software Problems, Hints and Reviews

Your error message refers to a 'D' drive. Did you install any part of the package elsewhere than your 'C' drive? If so then it might prevent the...

2 replies | 170 view(s)

9th June 2018, 23:40

BradtheRad replied to a thread ALL-PMOS charge pump MOS in Analog Circuit Design

A similar charge pump was posted in this thread in 2014: https://www.edaboard.com/showthread.php?324117 I made a simulation, which appears to...

7 replies | 487 view(s)

8th June 2018, 04:54

BradtheRad replied to a thread Member level... adding more text here or it wont take.... in About EDAboard.com

Some of that information is more informative, some less. This interface is also programmed for other message boards and other age groups. The red &...

1 replies | 270 view(s)

7th June 2018, 23:29

BradtheRad replied to a thread Underwater electrode in Elementary Electronic Questions

Does this refer to two computers? Running Windows? Networking by wifi has made it easier in recent years. Or by ethernet cable. In some cases you...

38 replies | 999 view(s)

7th June 2018, 02:54

BradtheRad replied to a thread Replying to a private message... in About EDAboard.com

Often I must open a new window of a thread, because of a problem accessing the image uploader. Usually I am able to 'Restore Auto-saved'. However...

2 replies | 148 view(s)

6th June 2018, 06:08

BradtheRad replied to a thread Oscillator - astable in Analog Circuit Design

This circuit is based on the RS flip-flop using cross-coupled transistors. As you state, one capacitor charges while the other discharges, creating...

10 replies | 361 view(s)

6th June 2018, 03:07

BradtheRad replied to a thread Underwater electrode in Elementary Electronic Questions

Have you tried experimenting with voltages generated between two different metals when immersed in electrolyte? Pond water conducts electricity...

38 replies | 999 view(s)

4th June 2018, 07:48

BradtheRad replied to a thread Selection of the Boost converters in Professional Hardware and Electronics Design

Your specs ask for 200W from a 6V supply. Thus it needs to provide Ampere levels upwards of 30A. It won't be easy to do this. Parasitic resistance...

4 replies | 303 view(s)

2nd June 2018, 18:36

BradtheRad replied to a thread [SOLVED] UPS for desktop is not working in Power Electronics

We had a UPS containing 4 gel cells, each 6V (total 24V). After 3 years it stopped working. I found one gel cell was under-voltage. The instructions...

8 replies | 266 view(s)

2nd June 2018, 04:29

BradtheRad replied to a thread Help to understand the sensor output and interfacing in Analog Circuit Design

Consider also sending the signal as an AC frequency. You'll want a voltage-to-frequency converter. The receiving end has a frequency-to-voltage...

17 replies | 432 view(s)

1st June 2018, 07:31

BradtheRad replied to a thread Light lit when motor rotate in Analog Circuit Design

When you spin an ordinary motor manually it becomes a generator. Evidently it produces enough voltage such that it travels back through circuitry, to...

10 replies | 362 view(s)

1st June 2018, 05:34

BradtheRad replied to a thread Problem with my car alarm system in Hobby Circuits and Small Projects Problems

Auto security systems seem to do a lot of inexplicable things. Things we ordinary people would not expect intuitively. I discovered this last fall...

1 replies | 193 view(s)

1st June 2018, 04:23

BradtheRad replied to a thread ALL-PMOS charge pump MOS in Analog Circuit Design

Several modes of operation. Vin is unchanging at the gate terminal, however the mosfets turn on or off because voltage levels change in neighboring...

7 replies | 487 view(s)

31st May 2018, 07:08

BradtheRad replied to a thread Question on test set up for BLDC motor in Hobby Circuits and Small Projects Problems

Torque is measured by seeing how well your motor powers a physical load. This can be done by having it spin a propeller in liquid or air As you speed...

7 replies | 309 view(s)

30th May 2018, 09:17

BradtheRad replied to a thread [SOLVED] national semiconductor application note in Service Manuals, Requests, Repair Tips

Here is an example of this method. By varying the voltage going to the diodes, some middle position can be found which causes the diodes to create a...

5 replies | 412 view(s)

28th May 2018, 07:40

BradtheRad replied to a thread ALL-PMOS charge pump MOS in Analog Circuit Design

After a few cycles the voltage rises at the upper end of Cpump1. Soon it 'pumps up' greater than Vin, hence Vin is no longer sufficient to turn off...

7 replies | 487 view(s)

28th May 2018, 00:42

BradtheRad replied to a thread Sinusoidal VCO oscillator around 25 Mhz in Analog Circuit Design

Mosfets have a measure of unpredictability. They are not all controlled in the same range of operation, to turn them On & Off. Some mosfets will not...

4 replies | 229 view(s)

27th May 2018, 22:50

BradtheRad replied to a thread ALL-PMOS charge pump MOS in Analog Circuit Design

I'm running a simulation. From what I can see, the clock signals carry current. When P3 turns on, it connects the two lower capacitors directly in...

7 replies | 487 view(s)