Classic Audio Products, Inc.Classic Audio Products, Inc.Classic Audio Products, Inc.
500 Series Rack Kits (41)

Aluminum Control Knobs (23)

Assembled Modules (3)

Attenuators (3)

Capacitors (3)

CAPI Attire (6)

CAPI Nip-N-Tuck Bundles (16)

Connectors (30)

Diodes/Rectifiers (1)

Faders (2)

Floor Box PSU (17)

HiZ Plug-Ins (9)

LED Indication

Meters (1)

Misc Hardware & Bits

Modular Console & Rack Parts (18)

Op Amps (34)

PCB's & Kits (67)

Potentiometers (8)

PSU Items (5)

Relays (6)

Resistors (1)

Ribbon Mic Preamps (2)

Switches (20)

Tools (5)

Transformers (15)

Transistors (4)

Newest Products
What's New? more
HiZ Plug-In FET-ZCON1 Full Kit
HiZ Plug-In FET-ZCON1 Full Kit
Shipping & Returns
Privacy Notice
Reviews & Testimonials
Audio & Video Clips
Authorized Builders
DOA Install
Support Documents
About Us
Contact Us
Plug-In Relay.1 PCB
Number of Products in stock: 198

Click to enlarge

Click to enlarge

The Plug-In Relay.1 PCB is a raw printed circuit board only, that houses a DPDT relay and a small, relay control circuit. The circuit is very simple while also being elegant. It is based on a circuit that was used throughout my vintage console for some of the mute/solo functions as well as other logic functions. Very smooth operation is achieved by the included de-bounce and anti-spike measures. In this circuit, with no connection to "VC" or the control pin, the relay is activated which couples the "B" pins to the "O" pins. By simply making a 0V or ground connection from your logic PSU to the "VC" control pin, the relay is deactivated which couples the "A" pins to the "O" pins.

So, a bonus to this circuit is that you only need to run the operating voltage to the Plug-In Relay.1 PCB. All control remote switching is done with 0V or ground. I use two of these Plug-In Relay.1 boards for all HiZ selection/switching duties for the VP312DI project. I could not accomplish the same task if I were switching the higher coil voltage.

If installed by soldering, the board sits only .83"(21.1mm) above the mating PCB. The United Chemi-Con capacitors have been chosen due to their very low projection from the PCB. If the PCB is stuffed with our parts kit, the footprint is no more than .41"(10.4mm) from the bottom of the solder pins to the tallest component.

Simple control of DPDT relay for switching balanced audio
The PCB is .9"(22.9mm) wide by .83"(21.1mm) inch tall
Operates smoothly on 12V or 24V (Proper relay required)
Uses common .100"(2.54mm) 3M header, 9 pins
Can be soldered directly to a PCB or used with a 3M socket
Parts kits can be found here
Panasonic TQ2-12V relays can be found here
Panasonic TQ2-24V relays can be found here
Full Plug-In Relay.1 bundles can be found here

***Please note: This item is a raw, unpopulated PCB only. All other components in pictures are for informational purposes only.

Additional information and photos:

Click to enlarge

PCB Bottom

Click to enlarge

Assembled 1

Click to enlarge

Assembled 2

This product was added to our catalog on Tuesday August 10, 2010.
Classic Audio Products, Inc.
Customers who bought this product also purchased:
hFE Matched BC550C Pair
hFE Matched BC550C Pair
Discrete Voltage Follower #1
Discrete Voltage Follower #1
2503-Litz Output Transformer
2503-Litz Output Transformer
1:40 Ribbon Mic Transformer
1:40 Ribbon Mic Transformer
1-508 Hardware Kit
1-508 Hardware Kit
VP312-VPR Entire Bundle (Stepped)
VP312-VPR Entire Bundle (Stepped)
Shopping Cart more
0 items
Curative Notice
Classic Audio Products, Inc. is not affiliated with API. Customers and fans should not refer to Classic Audio Products, Inc. as "Classic API." API is a registered trademark of Automated Processes Incorporated. Classic Audio Products, Inc. has no affiliation with Automated Processes Incorporated.
Notifications more
NotificationsNotify me of updates to Plug-In Relay.1 PCB
Quick Find
Use keywords to find the product you are looking for.
Advanced Search
Tell A Friend
Tell someone you know about this product.
Reviews more
Write ReviewWrite a review on this product!

Copyright © 2018 Classic Audio Products, Inc.
Powered by osCommerce