mirror of
https://github.com/diodeinc/pcb.git
synced 2026-09-14 20:17:19 +08:00
Akhil Velagapudi
bac69e5ce9
Amp-Thread-ID: https://ampcode.com/threads/T-01a049f3-6fc0-76ca-af3e-89e69679c03e
154 lines
5.4 KiB
Python
154 lines
5.4 KiB
Python
"""General utilities for Zen."""
|
|
|
|
load("units.zen", "Resistance")
|
|
|
|
# fmt: off
|
|
E_SERIES = {
|
|
"E3": [
|
|
1.00, 2.2, 4.7
|
|
],
|
|
"E6": [
|
|
1.00, 1.5, 2.2, 3.3, 4.7, 6.8
|
|
],
|
|
"E12": [
|
|
1.0, 1.2, 1.5, 1.8, 2.2, 2.7, 3.3, 3.9, 4.7, 5.6, 6.8, 8.2
|
|
],
|
|
"E24": [
|
|
1.0, 1.1, 1.2, 1.3, 1.5, 1.6, 1.8, 2.0, 2.2, 2.4, 2.7, 3.0,
|
|
3.3, 3.6, 3.9, 4.3, 4.7, 5.1, 5.6, 6.2, 6.8, 7.5, 8.2, 9.1
|
|
],
|
|
"E48": [
|
|
1.00, 1.05, 1.10, 1.15, 1.21, 1.27, 1.33, 1.40, 1.47, 1.54,
|
|
1.62, 1.69, 1.78, 1.87, 1.96, 2.05, 2.15, 2.26, 2.37, 2.49,
|
|
2.61, 2.74, 2.87, 3.01, 3.16, 3.32, 3.48, 3.65, 3.83, 4.02,
|
|
4.22, 4.42, 4.64, 4.87, 5.11, 5.36, 5.62, 5.90, 6.19, 6.49,
|
|
6.81, 7.15, 7.50, 7.87, 8.25, 8.66, 9.09, 9.53
|
|
],
|
|
"E96": [
|
|
1.00, 1.02, 1.05, 1.07, 1.10, 1.13, 1.15, 1.18, 1.21, 1.24,
|
|
1.27, 1.30, 1.33, 1.37, 1.40, 1.43, 1.47, 1.50, 1.54, 1.58,
|
|
1.62, 1.65, 1.69, 1.74, 1.78, 1.82, 1.87, 1.91, 1.96, 2.00,
|
|
2.05, 2.10, 2.15, 2.21, 2.26, 2.32, 2.37, 2.43, 2.49, 2.55,
|
|
2.61, 2.67, 2.74, 2.80, 2.87, 2.94, 3.01, 3.09, 3.16, 3.24,
|
|
3.32, 3.40, 3.48, 3.57, 3.65, 3.74, 3.83, 3.92, 4.02, 4.12,
|
|
4.22, 4.32, 4.42, 4.53, 4.64, 4.75, 4.87, 4.99, 5.11, 5.23,
|
|
5.36, 5.49, 5.62, 5.76, 5.90, 6.04, 6.19, 6.34, 6.49, 6.65,
|
|
6.81, 6.98, 7.15, 7.32, 7.50, 7.68, 7.87, 8.06, 8.25, 8.45,
|
|
8.66, 8.87, 9.09, 9.31, 9.53, 9.76
|
|
],
|
|
"E192": [
|
|
1.00, 1.01, 1.02, 1.04, 1.05, 1.06, 1.07, 1.09, 1.10, 1.11,
|
|
1.13, 1.14, 1.15, 1.17, 1.18, 1.20, 1.21, 1.23, 1.24, 1.26,
|
|
1.27, 1.29, 1.30, 1.32, 1.33, 1.35, 1.37, 1.38, 1.40, 1.42,
|
|
1.43, 1.45, 1.47, 1.49, 1.50, 1.52, 1.54, 1.56, 1.58, 1.60,
|
|
1.62, 1.64, 1.65, 1.67, 1.69, 1.72, 1.74, 1.76, 1.78, 1.80,
|
|
1.82, 1.84, 1.87, 1.89, 1.91, 1.93, 1.96, 1.98, 2.00, 2.03,
|
|
2.05, 2.08, 2.10, 2.13, 2.15, 2.18, 2.21, 2.23, 2.26, 2.29,
|
|
2.32, 2.34, 2.37, 2.40, 2.43, 2.46, 2.49, 2.52, 2.55, 2.58,
|
|
2.61, 2.64, 2.67, 2.71, 2.74, 2.77, 2.80, 2.84, 2.87, 2.91,
|
|
2.94, 2.98, 3.01, 3.05, 3.09, 3.12, 3.16, 3.20, 3.24, 3.28,
|
|
3.32, 3.36, 3.40, 3.44, 3.48, 3.52, 3.57, 3.61, 3.65, 3.70,
|
|
3.74, 3.79, 3.83, 3.88, 3.92, 3.97, 4.02, 4.07, 4.12, 4.17,
|
|
4.22, 4.27, 4.32, 4.37, 4.42, 4.48, 4.53, 4.59, 4.64, 4.70,
|
|
4.75, 4.81, 4.87, 4.93, 4.99, 5.05, 5.11, 5.17, 5.23, 5.30,
|
|
5.36, 5.42, 5.49, 5.56, 5.62, 5.69, 5.76, 5.83, 5.90, 5.97,
|
|
6.04, 6.12, 6.19, 6.26, 6.34, 6.42, 6.49, 6.57, 6.65, 6.73,
|
|
6.81, 6.90, 6.98, 7.06, 7.15, 7.23, 7.32, 7.41, 7.50, 7.59,
|
|
7.68, 7.77, 7.87, 7.96, 8.06, 8.16, 8.25, 8.35, 8.45, 8.56,
|
|
8.66, 8.76, 8.87, 8.98, 9.09, 9.20, 9.31, 9.42, 9.53, 9.65,
|
|
9.76, 9.88
|
|
]
|
|
}
|
|
# fmt: on
|
|
|
|
|
|
def _e_series(physical_value, series):
|
|
"""Return the closest series value to the given number."""
|
|
|
|
_unit = lambda x: physical_value.with_value(x)
|
|
|
|
# Non-positive values are not part of an E-series.
|
|
if physical_value.value <= 0:
|
|
return physical_value
|
|
|
|
decade = 1.0
|
|
normalized = physical_value
|
|
|
|
# Normalize to one decade.
|
|
for _ in range(100):
|
|
if normalized >= 10.0:
|
|
normalized = normalized / 10.0
|
|
decade = decade * 10.0
|
|
elif normalized < 1.0:
|
|
normalized = normalized * 10.0
|
|
decade = decade / 10.0
|
|
else:
|
|
break
|
|
|
|
# Include the first value of the next decade.
|
|
candidates = series + [series[0] * 10.0]
|
|
closest = min(candidates, key=lambda value: normalized.diff(_unit(value)))
|
|
return _unit(closest) * decade
|
|
|
|
|
|
def e3(physical_value):
|
|
"""Return the closest E3 series value to the given number."""
|
|
return _e_series(physical_value, E_SERIES["E3"])
|
|
|
|
|
|
def e6(physical_value):
|
|
"""Return the closest E6 series value to the given number."""
|
|
return _e_series(physical_value, E_SERIES["E6"])
|
|
|
|
|
|
def e12(physical_value):
|
|
"""Return the closest E12 series value to the given number."""
|
|
return _e_series(physical_value, E_SERIES["E12"])
|
|
|
|
|
|
def e24(physical_value):
|
|
"""Return the closest E24 series value to the given number."""
|
|
return _e_series(physical_value, E_SERIES["E24"])
|
|
|
|
|
|
def e48(physical_value):
|
|
"""Return the closest E48 series value to the given number."""
|
|
return _e_series(physical_value, E_SERIES["E48"])
|
|
|
|
|
|
def e96(physical_value):
|
|
"""Return the closest E96 series value to the given number."""
|
|
return _e_series(physical_value, E_SERIES["E96"])
|
|
|
|
|
|
def e192(physical_value):
|
|
"""Return the closest E192 series value to the given number."""
|
|
return _e_series(physical_value, E_SERIES["E192"])
|
|
|
|
|
|
CAPACITOR_VOLTAGE_RATINGS = [6.3, 10.0, 16.0, 25.0, 50.0, 100.0, 200.0, 250.0, 500.0, 1000.0]
|
|
|
|
|
|
def capacitor_voltage_rating(voltage):
|
|
"""Round voltage up to a common capacitor voltage rating."""
|
|
required = voltage.with_value(voltage.max)
|
|
|
|
for rating in CAPACITOR_VOLTAGE_RATINGS:
|
|
if required.value <= rating:
|
|
return voltage.with_value(rating)
|
|
|
|
return required
|
|
|
|
|
|
def format_value(*args):
|
|
strings = []
|
|
for arg in args:
|
|
if type(arg) == "enum":
|
|
strings.append(str(arg.value))
|
|
elif type(arg) == "list":
|
|
# Format lists as comma-separated values instead of JSON-like brackets
|
|
strings.append(", ".join([str(item) for item in arg]))
|
|
elif arg != None:
|
|
strings.append(str(arg))
|
|
return " ".join(strings)
|