11/01/2018-21:39:10
(Modification du message : 11/01/2018-21:39:50 par Jean-ClaudeRL.)
RE: Cherche schéma et procédure de réglage d’un préampli ligne «Mark JC-2 V1.1»
Bonsoir Phil
Sur le site eBay d'un vendeur de ce circuit, sans garantie:
2. Installed ZTX450 550 on the tube, adjust the adjustable resistance of 200Ω, measuring the 510Ω resistor on both ends of the voltage is about 1-1.1V, so that the input current is stable in the 2MA up and down. Adjust the adjustable resistance of 1K, so that the output midpoint (OUT) close to 0MV, this time the input current estimation is somewhat changed, repeatedly adjust the two adjustable resistance to achieve the budget value.
Le lien
https://www.ebay.fr/itm/Symmetric-Comple...SwjKFZV5Yo
Jean Claude
Sur le site eBay d'un vendeur de ce circuit, sans garantie:
2. Installed ZTX450 550 on the tube, adjust the adjustable resistance of 200Ω, measuring the 510Ω resistor on both ends of the voltage is about 1-1.1V, so that the input current is stable in the 2MA up and down. Adjust the adjustable resistance of 1K, so that the output midpoint (OUT) close to 0MV, this time the input current estimation is somewhat changed, repeatedly adjust the two adjustable resistance to achieve the budget value.
Le lien
https://www.ebay.fr/itm/Symmetric-Comple...SwjKFZV5Yo
Jean Claude
Un homme qui se prend pour un roi est fou, un roi qui se croit roi ne l'est pas moins (Jaques Lacan)