Printed Circuit Boards for Lundahl Transformers
EE16, EE17, EE18, EE19, EE32
Output Impedance Switch
Transformers:
LL1620, LL1623, LL1627, LL1679
All Versions SE, PP and PPZ(parafeed)
Board Info - - Transformer Data Sheets
- Board allows TWO output impedances.
- No more trouble or mistakes when wiring the transformer.
- Impedances can be chosen with an external switch (supplied with it) or if only one impedance is needed, use Solder Jumpers. (Solder Jumpers only for LL1679)
Transformers:
LL1544, LL1544A, LL1545, LL1545A, LL1545, LL1550, LL1636, LL1678, LL9202, LL9226, LL9226XL.
Board Info - - Transformer Data Sheets
Ordering information:
Transformer + Option 1: Transformer + PCB + Piano Switch + mounting hardware.
Transformer + Option 2: Transformer + PCB + Piano Switch + mounting hardware + PBC EE22 with switch.
- 8 Gain factors can be selected. 5 by the datasheet, and 3 new
- Very convenient way to connect various inputs and outputs
- Optional switch board EE22 for "high-Low" gain can be connected
- Optional termination network can be mounted
- 3mm thread mounting hardware included
- Dimensions: 40x70mm
Board EE21 for Transformers: LL1674, LL1676, LL1922, LL1930, LL1931, LL1941, LL1943, LL1971, LL5402.
Board EE23 for Transformers: LL1588, LL1592, LL1690, LL1948
Board Info - - Transformer Data Sheets
Ordering information:
Transformer + Option 1: Transformer + PCB + mounting hardware.
Transformer + Option 2: Transformer + PCB + mounting hardware + PBC EE22 with switch.
- 2 Gain factors can be selected.
- Very convenient way to connect various inputs and outputs
- Optional switch board EE22 for "high-Low" gain can be connected
- Optional termination network can be mounted
- 3mm thread mounting hardware included
- Dimensions: 43x68mm
EE22 Switch Board
Optional used for Boards EE20, EE21, EE23
Ordering information: Just select Option#2 when ordering a transformer. The price list shows this more convenient.
- This little board will make EE20, EE22 and EE23 change between two gain factors. EE22 and EE23 have only two gain factors anyway. EE20 has 8 gain factors, and with this Switch Board, the gain can be stepped one factor up or down.
- The board is mounted by the switch itself, with a 6mm hole. Just connect the 5 wires, and it works.
- The switch itsels is a low resistance type, with silver switching contacts.
- Dimensions: 33x39mm
EE31 Universal Board.
An easy and yet very good way to create an isolated high impedance Audio Input.