On Fri, 12 Feb 1999 13:11:04 -0800 Loren Moline WA7SKT
<lmoline@olynet.com> writes:
>
>Find out the relay coil resistance or current.
>
>The coil should have a electrolytic cap in parallel and a diode and
>power
>resistor in series with this combination.
>
>The resistor sets both the dc voltage across the coil and in
>combination
>with the electrolytic capacitor determines the time constant of the
>circuit.
>
>Loren WA7SKT
OH ? None of the step starts from Ameritron to home brew that I am aware
of use an electrolytic.
You may be trying to duplicate a text book ckt with a decimal point out
of place.
The simplest and most reliable amp type ckts use a resistor only .
KISS
73 Carl KM1H
>
>At 02:30 PM 2/12/99 -0600, you wrote:
>>
>>Hi Gang,
>>
>>I'm just a neophyte with amplifiers but I'm learning, please excuse
>my
>>ignorance. I'm installing a step start kit in my L-4B amplifier. It
>has
>>two 48V DC relays in parallel with 10 ohm 10 watt resistors. I don't
>want
>>to _borrow_ relay coil power from the place that the step start kit
>>manufacturer suggests. The instructions suggest I tap into the
>voltage
>>used for tube cut off. I want to get the voltage to trip the relays
>from
>>the AC power input. I need to make a circuit that will delay the
>relay for
>>1/2 a second. I realize that the power supply is designed to handle
>the
>>inrush without the step start but I want to save wear and tear on my
>>irreplaceable on/off switch. What are your suggestions or ideas?
>Thanks
>>in advance and 73,
>>
>>
>>Al
>>KE3OK@netins.net
>>
>>
>>
>>
>>
>>
>>--
>>FAQ on WWW: http://www.contesting.com/ampfaq.html
>>Submissions: amps@contesting.com
>>Administrative requests: amps-REQUEST@contesting.com
>>Problems: owner-amps@contesting.com
>>Search: http://www.contesting.com/km9p/search.htm
>>
>>
>
>
>--
>FAQ on WWW: http://www.contesting.com/ampfaq.html
>Submissions: amps@contesting.com
>Administrative requests: amps-REQUEST@contesting.com
>Problems: owner-amps@contesting.com
>Search: http://www.contesting.com/km9p/search.htm
>
>
___________________________________________________________________
You don't need to buy Internet access to use free Internet e-mail.
Get completely free e-mail from Juno at http://www.juno.com/getjuno.html
or call Juno at (800) 654-JUNO [654-5866]
--
FAQ on WWW: http://www.contesting.com/ampfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|