From b4d9f761ad8f33df3c25c6b1c1b17828864111b5 Mon Sep 17 00:00:00 2001 From: thomasabishop Date: Wed, 18 Feb 2026 16:28:40 +0000 Subject: [PATCH] more ham notes --- zk/Antennas.md | 1 + zk/Current.md | 2 +- zk/Ground.md | 2 +- ...xes_for_units_of_electrical_measurement.md | 5 ++- zk/Resistance.md | 5 ++- ...and_parallel_circuits_for_amateur_radio.md | 34 +++++++++++++++++++ zk/Voltage_sources.md | 1 - 7 files changed, 43 insertions(+), 7 deletions(-) create mode 100644 zk/Antennas.md create mode 100644 zk/Series_and_parallel_circuits_for_amateur_radio.md diff --git a/zk/Antennas.md b/zk/Antennas.md new file mode 100644 index 0000000..8b13789 --- /dev/null +++ b/zk/Antennas.md @@ -0,0 +1 @@ + diff --git a/zk/Current.md b/zk/Current.md index fe6584c..625f777 100644 --- a/zk/Current.md +++ b/zk/Current.md @@ -1,5 +1,5 @@ --- -tags: [physics, electricity] +tags: [physics, electricity, ham-study] --- > Electrical current is the movement of electrons from negatively charged atoms diff --git a/zk/Ground.md b/zk/Ground.md index 5c03715..2e3f6bf 100644 --- a/zk/Ground.md +++ b/zk/Ground.md @@ -1,5 +1,5 @@ --- -tags: [physics, electricity] +tags: [physics, electricity, ham-study] --- # Ground diff --git a/zk/Prefixes_for_units_of_electrical_measurement.md b/zk/Prefixes_for_units_of_electrical_measurement.md index da59c00..60a1a5c 100644 --- a/zk/Prefixes_for_units_of_electrical_measurement.md +++ b/zk/Prefixes_for_units_of_electrical_measurement.md @@ -1,12 +1,11 @@ --- -tags: [physics, electricity, exponents] +tags: [physics, electricity, exponents, ham-study] --- # Prefixes for unit of electrical measurement In electronics we are often dealing with units that are very large or very -small, thus we rely on [exponents](Exponents.md) for formal -expression. +small, thus we rely on [exponents](Exponents.md) for formal expression. | Prefix | Symbol | Expression as exponent | Expression as decimal value | English word | | ------ | ------ | ---------------------- | --------------------------- | ------------ | diff --git a/zk/Resistance.md b/zk/Resistance.md index 348e3b7..d7fc516 100644 --- a/zk/Resistance.md +++ b/zk/Resistance.md @@ -1,5 +1,5 @@ --- -tags: [physics, electricity] +tags: [physics, electricity, ham-study] --- # Resistance @@ -64,3 +64,6 @@ A resistor is an electrical component that can be used in circuits to introduce specific amounts to resistance where needed. This is typically done in order to temper the total voltage and so keep the current flowing within certain set parameters. + +Due to the conservation of energy some of the electrical energy that encounters +the resistor will be converted into heat. diff --git a/zk/Series_and_parallel_circuits_for_amateur_radio.md b/zk/Series_and_parallel_circuits_for_amateur_radio.md new file mode 100644 index 0000000..369492a --- /dev/null +++ b/zk/Series_and_parallel_circuits_for_amateur_radio.md @@ -0,0 +1,34 @@ +--- +tags: + - electricity + - ham-study +--- + +For **series** circuits: + +- The same amount of **current** passes through each component +- The **volatage** is the _sum_ of the individual voltages accross each + component + +For **parallel** circuits: + +- The total **current** is the _sum_ of the current that passes through each + component +- The same **voltage** passes accross each component + +We can also express this by saying that, in series circuits: + +- the current is constant +- the voltage divides + +and in parallel circuits: + +- the voltage is constant +- the current divides + +Therefore... + +> Cells configured in series **increases the overall voltage available** and +> cells configured in parallel **increases the overall current available** + +![](../img/series-parallel-circuit-diag.jpg) diff --git a/zk/Voltage_sources.md b/zk/Voltage_sources.md index 9f3d192..d26cb2a 100644 --- a/zk/Voltage_sources.md +++ b/zk/Voltage_sources.md @@ -33,7 +33,6 @@ Depending on how it is wired, a generator can produce **directed current** (DC) or **alternating current** (AC): - **Directed current** - - The electrons flow in only one direction - **Alternating current**