“This page serves as a repository for all the bits and pieces I am collecting towards creating a modern version of the classic 1954 work by Craggs and Meek: High Voltage Laboratory Technique.” – Jim
High Voltage Experimenter’s Handbook
delabs Notes –
First note a important point, HV is dangerous and the behavior of HV is shockingly unpredictable.
Jim shown caged by Faraday but protected by the law of Gauss. Two medium sized Tesla coils from Brian Basura and Ross Overton were used .
Humidity, clothing, footwear, gloves and furniture all add to the safety factors. Not to mention the special insulators and probes in plastic and ceramic that guards your body from a fatal mishap.
First you should be very capable in using normal electrical equipment with proper prior training. Then you should have experience in Mains power and energy systems. Lastly you should be above 20 Yrs of age and Learn HV theory and Practice under a Very experienced professional in that Specialization. Jim Lux has created some valuable pages on HV.
High Voltage Experimenter’s Handbook
There is no harm whatsoever now in studying and mastering the theory and also teaching others about the energy that is in high voltage. HV in HF is even more funny.
More EE Stuff at Jim Lux’s Web site
All that can be invented is already invented by nature. Man can only uncover a few facts and write about it. Start with this handbook. Life is precious, take care.
This is an interesting attempt in the right direction. The bandwidth may be only the audio range, but the first instruments with touch interface for tablets are being built for tablets even by DIY Enthusiasts.
SpecScope from NFX Development
SpecScope is a spectrum analyzer and is the second in the line of engineer applications from NFX Development. The SpecScope incorporates the speed and ease of use to access FFT frequency measurements in a hurry.
Some of the Features
- Logarithmic/Linear measurements
- Pinch to zoom in both X and Y axis
- Selectable No. bin for accuracy versus speed
- Three settings of spectrum averaging
- Threshold trigger to hold the peak value
- Tap to pause and resume measurements (graph is still navigational in this mode)
- A adjustable sample rate allow analysis from 10 Hz to 22KHz
Here are BASIC-52 projects and some Atmel AVR projects.and audio projects like Balanced microphone preamp with phantom power. It also has the old PIC Archive.
Electronic Projects of Mast
Projects with Basic 52
- Using DS1621 temperature sensor chip with BASIC-52 (Temperature logger)
- Using ADS1286 12-bit ADC with BASIC-52
- Cheap R2R DAC for BASIC-52 with performance analysis
- Using RF modules for wireless communication with BASIC-52
- Sinewave generator with AD9835 DDS, driven by BASIC-52
My first 8052 BASIC Project
“So, first of all, you need a 80C52 or compatible microcontroller. There are several producers, I used Atmel’s AT89C52 which is FLASH based, so it can be reprogrammed (as opposed to 80C52 which is OTP part). Any 89C52 or 87C52 part will do fine for experimenting, but if you do not have a programmer for 8051 family of MCU-s, Atmel also has a AT89S8252 (8052 compatible chip with 2K of EEPROM built in) with a serial programming interface which makes building a programmer much easier.”
Simple PWM controller – with 555
This 555 timer based PWM controller features almost 0..100% pulse width regulation using R1, while keeping the oscillator frequency relatively stable. The frequency is dependent on values of R1 and C1, values shown will give a frequency range from about 170 to 200 Hz. Any 555 chip will do, CMOS is fine as well.
Local copy of David Tait’s PIC archive
Most of these files are related in some way to my simple PIC16C84 programmer for IBM compatible PCs (download pic84pgm.zip and pic84v05.zip). You may find one or two packages that have more to offer though.