Kila, the Magic Husky's Ham Radio College featuring Kila and her Trusty Sidekick, Ben

Kila, the Magic Husky's Ham Radio College

featuring Kila and her Trusty Sidekick, Ben

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Episode 8 -- April 4, 2016 -- Interview with Radio Dave on his Solar Powered Home and Cars, Peak Oil, TPP and Diodes

Listen to the episode 72.3 MB MP3

Electric Cars
- Fiat 500 Electic
- Tesla Motors
- Mithos Car looks like a car designed to run on roads which already supply electricity. Someday, somebody may build such roads.
Diodes and rectifiers and LEDs
- N and P Doping
- forward bias
  - Silicon .6v - 1v
  - Silicon Rectifier 1.1v
  - Germanium .3v
  - Schottky 0.15V and 0.45V.
  - LED 1.2 - 3v
- Arsnic doping (-) adds electrons. Boron doping (+) needs extra electrons
- P-doped (Annode), N-doped (Cathode), depletion region in the middle
- Anode and Cathode (on test)
- Annode to plus and cathode to minus is forward bias.
- Reverse bais no current flow (unless really big!)
- Cathode has a stripe (on test) Stripe to minus!
- Rectifiers and Bridges
  - a single diode can be used as a half-wave rectifier to convert AC into <50% duty cycle DC.
  - 4 diodes in a bridge configuration ("Bridge Rectifier") make a full-wave rectifier to convert AC into <100% duty cycle DC.
  - A rectifier is just a fancy word for a diode being used to convert AC into DC.
- Reversed biased and Zener Diodes (but not on the tech test)
- Zener Diodes
  - Zener Diodes are designed to have a precise breakdown or zener voltage (reverse bias) for use as a voltage regulator for small loads. Typical forward bias is 1 volt. Reverse bias is the Zener voltage (V-sub-Z), typically some voltage you want such as 3.3 volts.
  - Typical use is in a "Classic" Zener Voltage Clamping circuit with a zener diode (reversed biased) and a series resistor before the load to "regulate" down to the zener voltage.
- Shotkey Diodes
  - handles power better
  - Works at higher frequencies
  - A Schottky diode is often used at the output of a power supply to insure against damaged due to reverse connections.
- Photodiodes change bias based on the amount of light present
- Light Emitting Diodes (LED on test)
  - Requires a resistor in series with it to work.
  - how to calculate the value of that resistor
  - long lasting, bright, low power, faster response
  - Power Supplies for Grow Lights -- Sine Waves prevent harmonics!!
- Diodes are very often used to limit damage from unexpected spikes in voltage. Transient-voltage-suppression (TVS) diodes are specialty diodes, kind of like zener diodes — lowish breakdown voltages (often around 20V) — but with very large power ratings (often in the range of kilowatts). They're designed to shunt currents and absorb energy when voltages exceed their breakdown voltage. Used with flyback transformers or motors during startup.
The Trans-Pacific Partnership or TPP is evil and treasonous, in my opinion. In particular, the Investor-State Dispuste Settlement chapter makes it possible and likely for multinational corporations to sue to circomevent our health and safety and environmental and labor laws, or make us pay for their lost mythical profits from the result of such laws. Basically, it is a litteral fascist takeover of a number of countries, including the USA. Hillary Clinton voted for it. She claims to have changed her mind, but I don't trust her.

If I've made any mistakes, please Call me or email Kila or you can call us directly at (707) 413-6435.
Here is my main website.