Kogan Internet radio KGNDRVCA

[keithr0]

On 5/15/2019 1:02 PM, #BoycottEurovision2019 wrote:

keithr0 wrote:
On 5/12/2019 8:29 AM, #BoycottEurovision2019 wrote:
RMD wrote:
On Wed, 01 May 2019 05:44:52 GMT, rmd@invalid.invalid (RMD) wrote:
Hi All,


I've proved this by sticking metal pins into the DC output wires
and connecting an external variable DC power supply to these pins.
The radio then plays again. Currently I'm feeding it 12Volts DC,
and the radio stops working if I wind the voltage down to about 8
volts.

I've soak-tested theis radio with an unregulated 7.5V plugpack,
which puts out 11.2V on standby and 10.5V when the radio is on. The
radio is still working fine after 10 days, mostly operating on
standby.

Disregard the open circuit /unloaded voltage reading of plug pack.

The significant values is when its under load, 10.5v which I think
is the "sweet spot" the 'resonant voltage' where the circuit 'hums'
along.

"Resonant voltage" I worked in electronics for 50 odd years but
that's a new one on me.

get with the program grandpa , it's what the hip young kids call it these
days!

Sonny, I was hip before your mummy and daddy even met.

Its more "descriptive " than "technical" term, what about "operating
voltage"?

It's not even descriptive - look up the meaning of resonance. The phrase
"Optimum voltage" would be both descriptively and technically correct

 

[#BoycottEurovision2019]

keithr0 wrote:

On 5/15/2019 1:02 PM, #BoycottEurovision2019 wrote:
keithr0 wrote:
On 5/12/2019 8:29 AM, #BoycottEurovision2019 wrote:
RMD wrote:
On Wed, 01 May 2019 05:44:52 GMT, rmd@invalid.invalid (RMD) wrote:
Hi All,


I've proved this by sticking metal pins into the DC output wires
and connecting an external variable DC power supply to these
pins. The radio then plays again. Currently I'm feeding it
12Volts DC, and the radio stops working if I wind the voltage
down to about 8 volts.

I've soak-tested theis radio with an unregulated 7.5V plugpack,
which puts out 11.2V on standby and 10.5V when the radio is on.
The radio is still working fine after 10 days, mostly operating on
standby.

Disregard the open circuit /unloaded voltage reading of plug pack.

The significant values is when its under load, 10.5v which I think
is the "sweet spot" the 'resonant voltage' where the circuit 'hums'
along.

"Resonant voltage" I worked in electronics for 50 odd years but
that's a new one on me.

get with the program grandpa , it's what the hip young kids call it
these days!

Sonny, I was hip before your mummy and daddy even met.

Its more "descriptive " than "technical" term, what about "operating
voltage"?

It's not even descriptive - look up the meaning of resonance. The
phrase "Optimum voltage" would be both descriptively and technically
correct

"Optimum voltage" is ok with me.

I was thinking of a "tuned RLC circuit" that have terms like
"Resonant Frequency" & "Series Resonance".
https://www.electronics-tutorials.ws/accircuits/series-resonance.html

the term *Resonant voltage* does exist & is used in other instances, e.g.

This diode has a *resonant voltage* for which there is a lot of current
that favors a particular voltage, achieved by placing two very thin layers
with a high energy conductance band very near each other.
https://en.wikipedia.org/wiki/Quantum_tunnelling#Tunnel_diode

And

*resonant voltage* step-up

Ability of an inductor and a capacitor in a series resonant circuit to
deliver a voltage several times greater than the input voltage of the
circuit.
https://encyclopedia2.thefreedictionary.com/resonant+voltage+step-up

And

What is *VOLTAGE RESONANCE* ?
Condition of a circuit when the magnitude of a voltage passes through the
maximum as the frequency is changed
https://thesciencedictionary.org/voltage-resonance/

as I said it was "descriptive" since technically we're not discussing "RLC
circuits"

I stumbled upon a better word to describe being "in harmony with the
environment "

syntony
noun
Definition of syntony

1 : the state of being normally responsive to and in harmony with the
environment
2 : resonance sense 1b(2)
https://www.merriam-webster.com/dictionary/syntony

 

[keithr0]

On 5/17/2019 10:39 AM, #BoycottEurovision2019 wrote:

keithr0 wrote:
On 5/15/2019 1:02 PM, #BoycottEurovision2019 wrote:
keithr0 wrote:
On 5/12/2019 8:29 AM, #BoycottEurovision2019 wrote:
RMD wrote:
On Wed, 01 May 2019 05:44:52 GMT, rmd@invalid.invalid (RMD) wrote:
Hi All,


I've proved this by sticking metal pins into the DC output wires
and connecting an external variable DC power supply to these
pins. The radio then plays again. Currently I'm feeding it
12Volts DC, and the radio stops working if I wind the voltage
down to about 8 volts.

I've soak-tested theis radio with an unregulated 7.5V plugpack,
which puts out 11.2V on standby and 10.5V when the radio is on.
The radio is still working fine after 10 days, mostly operating on
standby.

Disregard the open circuit /unloaded voltage reading of plug pack.

The significant values is when its under load, 10.5v which I think
is the "sweet spot" the 'resonant voltage' where the circuit 'hums'
along.

"Resonant voltage" I worked in electronics for 50 odd years but
that's a new one on me.

get with the program grandpa , it's what the hip young kids call it
these days!

Sonny, I was hip before your mummy and daddy even met.

Its more "descriptive " than "technical" term, what about "operating
voltage"?

It's not even descriptive - look up the meaning of resonance. The
phrase "Optimum voltage" would be both descriptively and technically
correct

"Optimum voltage" is ok with me.

I was thinking of a "tuned RLC circuit" that have terms like
"Resonant Frequency" & "Series Resonance".
https://www.electronics-tutorials.ws/accircuits/series-resonance.html

That is in the frequency domain not the voltage one

the term *Resonant voltage* does exist & is used in other instances, e.g.

This diode has a *resonant voltage* for which there is a lot of current
that favors a particular voltage, achieved by placing two very thin layers
with a high energy conductance band very near each other.
https://en.wikipedia.org/wiki/Quantum_tunnelling#Tunnel_diode

Thats quantum resonance, from an electronics point of view, the diode
has an area of negative resistance at a particular voltage. Using that
you can make a very simple oscillator or low power FM transmitter.

And

*resonant voltage* step-up

Ability of an inductor and a capacitor in a series resonant circuit to
deliver a voltage several times greater than the input voltage of the
circuit.
https://encyclopedia2.thefreedictionary.com/resonant+voltage+step-up

Still a function of frequency not voltage, that is an effect not the cause.

And

What is *VOLTAGE RESONANCE* ?
Condition of a circuit when the magnitude of a voltage passes through the
maximum as the frequency is changed
https://thesciencedictionary.org/voltage-resonance/

The resonance is still a function of frequency, the change in voltage is
simply an effect of frequency resonance.

as I said it was "descriptive" since technically we're not discussing "RLC
circuits"

RLC circuits are where resonance is relevant - in electronics at least

I stumbled upon a better word to describe being "in harmony with the
environment "

syntony
noun
Definition of syntony

1 : the state of being normally responsive to and in harmony with the
environment
2 : resonance sense 1b(2)
https://www.merriam-webster.com/dictionary/syntony

You could use that word if you wish to be particularly pseud, but most
people would understand and use optimum.